%
% Copyright (c) 2024 Kangwei Xia
% Released under the LaTeX Project Public License v1.3c License.
% Repository: https://gitee.com/xkwxdyy/exam-zh
%

\NeedsTeXFormat{LaTeX2e}

\RequirePackage{expl3}

\ProvidesExplPackage {exam-zh-symbols} {2025-02-19} {v0.2.5}
  {exam-zh symbols module}

\RequirePackage { tikz }

\keys_define:nn { exam-zh }
  { symbols .meta:nn = { exam-zh / symbols } {#1} }


% 正体的 e 和 i
\NewDocumentCommand \eu { } { \mathrm{ e } }
\NewDocumentCommand \upe { } { \mathrm{ e } }
\NewDocumentCommand \iu { } { \mathrm{ i } }
\NewDocumentCommand \upi { } { \mathrm{ i } }

\NewDocumentCommand \uppi { } { \mathrm{ \pi } }



% 分数 \frac \dfrac
\int_new:N \l__examzh_symbols_frac_numerator_str_int       % frac 分子字符数
\int_new:N \l__examzh_symbols_frac_denominator_str_int     % frac 分母字符数
\int_new:N \l__examzh_symbols_dfrac_numerator_str_int       % frac 分子字符数
\int_new:N \l__examzh_symbols_dfrac_denominator_str_int     % frac 分母字符数

\keys_define:nn { exam-zh / symbols }
  {
    % 是否重定义 \frac
    change-frac-style .bool_set:N = \l__examzh_symbols_change_frac_style_bool,
    % 是否重定义 \dfrac
    change-dfrac-style .bool_set:N = \l__examzh_symbols_change_dfrac_style_bool,
    % \frac 分子分母增加的额外距离
    frac-add .muskip_set:N = \l__examzh_symbols_frac_add_distance_muskip,
    % \dfrac 分子分母增加的额外距离
    dfrac-add .muskip_set:N = \l__examzh_symbols_dfrac_add_distance_muskip,
  }
\keys_set:nn { exam-zh / symbols }
  {
    change-frac-style = false,
    change-dfrac-style = false,
    frac-add = 5mu,
    dfrac-add = 5mu,
  }
\NewCommandCopy { \examzhfrac } { \frac }
\NewCommandCopy { \examzhdfrac } { \dfrac }
\RenewDocumentCommand { \frac } { m m }
  {
    \group_begin:
      \bool_if:NTF \l__examzh_symbols_change_frac_style_bool
        {
          % 计算分子分母的字符数
          \__examzh_symbols_frac_calc_str_num:nn {#1} {#2}
          % 根据字符数选择将额外的距离加在哪
          \__examzh_symbols_frac_add_distance:NNNNnn
            \examzhfrac
            \l__examzh_symbols_frac_numerator_str_int
            \l__examzh_symbols_frac_denominator_str_int
            \l__examzh_symbols_frac_add_distance_muskip
            {#1}{#2}
        }
        { \examzhfrac {#1} {#2} }
    \group_end:
  }
\RenewDocumentCommand { \dfrac } { m m }
  {
    \group_begin:
      \bool_if:NTF \l__examzh_symbols_change_dfrac_style_bool
        {
          % 计算分子分母的字符数
          \__examzh_symbols_frac_calc_str_num:nn {#1} {#2}
          % 根据字符数选择将额外的距离加在哪
          \__examzh_symbols_frac_add_distance:NNNNnn
            \examzhdfrac
            \l__examzh_symbols_frac_numerator_str_int
            \l__examzh_symbols_frac_denominator_str_int
            \l__examzh_symbols_dfrac_add_distance_muskip
            {#1}{#2}
        }
        % { \examzhdfrac {#1} {#2} }
        {
          \mathchoice { \examzhdfrac{#1}{#2} }
            { \examzhdfrac{#1}{#2} }
            { \examzhfrac{#1}{#2} }
            { \examzhfrac{#1}{#2} }
        }
    \group_end:
  }
\cs_new:Npn \__examzh_symbols_frac_calc_str_num:nn #1#2
  {
    \int_set:Nn \l__examzh_symbols_frac_numerator_str_int
      { \str_count:n {#1} }
    \int_set:Nn \l__examzh_symbols_frac_denominator_str_int
      { \str_count:n {#2} }
  }
% \__examzh_symbols_frac_add_distance:NNNNnn
  % <\oldfrac><numerator str num><denominator str num><add muskip><numerator><denominator>
\cs_new:Npn \__examzh_symbols_frac_add_distance:NNNNnn #1#2#3#4#5#6
  {
    \int_compare:nNnTF {#2} = {1}
      {
        \int_compare:nNnTF {#3} = {1}
          {
            % 分子字符数=1，分母字符数=1
            #1
              {
                \mskip #4
                #5
                \mskip #4
              } {#6}
          }
          {
            % 分子字符数=1，分母字符数>1
            #1 {#5}
              {
                \mskip #4
                #6
                \mskip #4
              }
          }
      }
      {
        \int_compare:nNnTF {#3} = {1}
          {
            % 分子字符数>1，分母字符数=1
            #1 
              {
                \mskip #4
                #5
                \mskip #4
              } {#6}
          }
          {
            % 分子字符数>1，分母字符数>1
            #1
              {
                \mskip #4
                #5
                \mskip #4
              } {#6}
          }
      }
  }

% 向量 vec
\int_new:N \l__examzh_symbols_vec_input_count_int

\AtBeginDocument
  {
    \RenewDocumentCommand { \vec } { m }
      { \__examzh_symbols_vec:n {#1} }
  }
\cs_new:Npn \__examzh_symbols_vec:n #1
  {
    % 先检测 #1 有多少个字符
    \__examzh_symbols_vec_detect_number_of_input_str:n {#1}
    % 只有 1 个的：加粗，多于两个的加箭头
    \int_compare:nNnTF { \l__examzh_symbols_vec_input_count_int } = {1}
      { \symbfit {#1} }
      { \overrightarrow {#1} }
  }
\cs_new:Npn \__examzh_symbols_vec_detect_number_of_input_str:n #1
  {
    \int_set:Nn \l__examzh_symbols_vec_input_count_int
      { \str_count:n { #1 } }
  }

% 平行四边形 \parallelogram
\keys_define:nn { exam-zh / symbols }
  {
    parallelogram-angle .fp_set:N = \l__examzh_symbols_parallelogram_angle_fp,
    parallelogram-x .dim_set:N = \l__examzh_symbols_parallelogram_x_dim,
    parallelogram-y .dim_set:N = \l__examzh_symbols_parallelogram_y_dim
  }

\cs_new:Npn \__examzh_symbols_parallelogram:
  {
    \begin{tikzpicture}[baseline]
      \draw[line~join = round] (0,0) --++ (\l__examzh_symbols_parallelogram_x_dim,0) --++ (\fp_use:N \l__examzh_symbols_parallelogram_angle_fp \c_colon_str \l__examzh_symbols_parallelogram_y_dim) -- (\fp_use:N \l__examzh_symbols_parallelogram_angle_fp \c_colon_str \l__examzh_symbols_parallelogram_y_dim) -- cycle;
    \end{tikzpicture}
  }

\AtBeginDocument
  {
    \RenewDocumentCommand { \parallelogram } { }
      {
        \group_begin:
          \keys_set:nn { exam-zh / symbols } 
            {
              parallelogram-angle = 67,
              parallelogram-x = 0.9em,
              parallelogram-y = 0.7em
            }
          \mathrel 
            { 
              \__examzh_symbols_symbol_four_size:n 
                { \__examzh_symbols_parallelogram: } 
            }
        \group_end:
      }
  }

% 平行 \parallel
\bool_new:N \l__examzh_symbols_parallel_slant_bool
\bool_new:N \l__examzh_symbols_nparallel_slant_bool

\keys_define:nn { exam-zh / symbols }
  {
    parallel-angle .fp_set:N = \l__examzh_symbols_parallel_angle_fp,
    parallel-twoline-distance .dim_set:N = \l__examzh_symbols_parallel_twoline_distance_dim,
    parallel-length .dim_set:N = \l__examzh_symbols_parallel_length_dim,
    parallel-baseline .dim_set:N = \l__examzh_symbols_parallel_baseline_dim,
    nparallel-slant-angle .fp_set:N = \l__examzh_symbols_nparallel_slant_angle_fp,
    nparallel-slant-length .dim_set:N = \l__examzh_symbols_nparallel_slant_length_dim,
    parallel-type .choice:,
    parallel-type / slant.code:n =
      { \bool_set_true:N \l__examzh_symbols_parallel_slant_bool },
    parallel-type / perpendicular .code:n =
      { \bool_set_false:N \l__examzh_symbols_parallel_slant_bool },
    nparallel-type .choice:,
    nparallel-type / slant.code:n =
      { \bool_set_true:N \l__examzh_symbols_nparallel_slant_bool },
    nparallel-type / perpendicular .code:n =
      { \bool_set_false:N \l__examzh_symbols_nparallel_slant_bool },
  }
\keys_set:nn { exam-zh / symbols }
  {
    parallel-type = slant,
    nparallel-type = slant,
  }

\cs_new:Npn \__examzh_symbols_parallel:
  {
    \begin{tikzpicture}[baseline=\l__examzh_symbols_parallel_baseline_dim]
      \draw[line~cap = round] (0, 0) --++ (\fp_use:N \l__examzh_symbols_parallel_angle_fp \c_colon_str \l__examzh_symbols_parallel_length_dim)
      (\l__examzh_symbols_parallel_twoline_distance_dim, 0) --++ (\fp_use:N \l__examzh_symbols_parallel_angle_fp \c_colon_str \l__examzh_symbols_parallel_length_dim);
    \end{tikzpicture}
  }
\cs_new:Npn \__examzh_symbols_nparallel:
  {
    \begin{tikzpicture}[line~cap = round, baseline=\l__examzh_symbols_parallel_baseline_dim]
      \draw
        (0, 0) --++ (\fp_use:N \l__examzh_symbols_parallel_angle_fp \c_colon_str \l__examzh_symbols_parallel_length_dim)
        (\l__examzh_symbols_parallel_twoline_distance_dim, 0) --++ (\fp_use:N \l__examzh_symbols_parallel_angle_fp \c_colon_str \l__examzh_symbols_parallel_length_dim);
      % n 线
      \draw
        (\l__examzh_symbols_parallel_twoline_distance_dim / 2, 0)++(\fp_use:N \l__examzh_symbols_parallel_angle_fp \c_colon_str \l__examzh_symbols_parallel_length_dim / 2) --++ (\fp_use:N \l__examzh_symbols_nparallel_slant_angle_fp \c_colon_str \l__examzh_symbols_nparallel_slant_length_dim / 2)
        (\l__examzh_symbols_parallel_twoline_distance_dim / 2, 0)++(\fp_use:N \l__examzh_symbols_parallel_angle_fp \c_colon_str \l__examzh_symbols_parallel_length_dim / 2) --++ (\fp_eval:n { \l__examzh_symbols_nparallel_slant_angle_fp + 180 } \c_colon_str \l__examzh_symbols_nparallel_slant_length_dim / 2);
    \end{tikzpicture}
  }

\AtBeginDocument
  {
    \cs_set_eq:NN \__examzh_symbols_old_parallel: \parallel
    \cs_set_eq:NN \__examzh_symbols_old_nparallel: \nparallel
    \RenewDocumentCommand { \parallel } { }
      {
        \group_begin:
          \bool_if:NTF \l__examzh_symbols_parallel_slant_bool
            {
              \keys_set:nn { exam-zh / symbols } 
                {
                  parallel-angle = 60,
                  parallel-twoline-distance = 0.28em,
                  parallel-length = 0.98em,
                  parallel-baseline = 0.5pt
                }
            }
            {
              % 竖直
              \keys_set:nn { exam-zh / symbols } 
                {
                  parallel-angle = 90,
                  parallel-twoline-distance = 0.2em,
                  parallel-length = 0.93em,
                  parallel-baseline = 1pt
                }
            }
          \mathrel 
            { 
              \__examzh_symbols_symbol_four_size:n 
                { \__examzh_symbols_parallel: } 
            }
        \group_end:
      }
    \RenewDocumentCommand { \nparallel } { }
      {
        \group_begin:
          
          \bool_if:NTF \l__examzh_symbols_nparallel_slant_bool
            {
              \keys_set:nn { exam-zh / symbols }
                {
                  parallel-angle = 60,
                  parallel-twoline-distance = 0.28em,
                  parallel-length = 0.98em,
                  parallel-baseline = 0.5pt,
                  nparallel-slant-angle = 120,
                  nparallel-slant-length = 0.65em
                }
            }
            {
              \keys_set:nn { exam-zh / symbols }
                {
                  parallel-angle = 90,
                  parallel-twoline-distance = 0.2em,
                  parallel-length = 0.93em,
                  parallel-baseline = 1pt,
                  nparallel-slant-angle = 50,
                  nparallel-slant-length = 0.6em
                }
              % \tikz[baseline = {([yshift = 5pt]current~bounding~box.south)}]{ \node { $\__examzh_symbols_old_nparallel:$ }; }
            }
          \mathrel 
            { 
              \__examzh_symbols_symbol_four_size:n 
                { \__examzh_symbols_nparallel: } 
            }
        \group_end:
      }
  }

% 平行且相等 \paralleleq
\bool_new:N \l__examzh_symbols_paralleleq_slant_bool

\keys_define:nn { exam-zh / symbols }
  {
    % 上面部分的倾斜角
    paralleleq-slant-angle .fp_set:N = \l__examzh_symbols_paralleleq_angle_fp,
    % 线长度
    paralleleq-upper-line-length .dim_set:N = \l__examzh_symbols_paralleleq_upper_line_length_dim,
    paralleleq-lower-line-length .dim_set:N = \l__examzh_symbols_paralleleq_lower_line_length_dim,
    % 线间距
    paralleleq-upper-twoline-distance .dim_set:N = \l__examzh_symbols_paralleleq_upper_twoline_distance_dim,
    paralleleq-lower-twoline-distance .dim_set:N = \l__examzh_symbols_paralleleq_lower_twoline_distance_dim,
    % 下面部分的水平偏移量
    paralleleq-lower-xshift .dim_set:N = \l__examzh_symbols_paralleleq_lower_xshift_dim,
    paralleleq-type .choice:,
    paralleleq-type / slant.code:n =
      { \bool_set_true:N \l__examzh_symbols_paralleleq_slant_bool },
    paralleleq-type / perpendicular .code:n =
      { \bool_set_false:N \l__examzh_symbols_paralleleq_slant_bool },
  }

\keys_set:nn { exam-zh / symbols }
  { paralleleq-type = slant }

\cs_new:Npn \__examzh_symbols_paralleleq:
  {
    \begin{tikzpicture}[baseline = -1.7pt]
      \draw[line~cap = round, name = parallel] (0, 0) --++ (\fp_use:N \l__examzh_symbols_paralleleq_angle_fp \c_colon_str \l__examzh_symbols_paralleleq_upper_line_length_dim)
      (\l__examzh_symbols_paralleleq_upper_twoline_distance_dim, 0) --++ (\fp_use:N \l__examzh_symbols_paralleleq_angle_fp \c_colon_str \l__examzh_symbols_paralleleq_upper_line_length_dim);
      \draw[anchor = parallel.south] 
        (\l__examzh_symbols_paralleleq_upper_twoline_distance_dim / 2 + \l__examzh_symbols_paralleleq_lower_xshift_dim,0) --++ (\l__examzh_symbols_paralleleq_lower_line_length_dim / 2,0)
        (\l__examzh_symbols_paralleleq_upper_twoline_distance_dim / 2 + \l__examzh_symbols_paralleleq_lower_xshift_dim,0) --++ (-\l__examzh_symbols_paralleleq_lower_line_length_dim / 2,0)
        (\l__examzh_symbols_paralleleq_upper_twoline_distance_dim / 2 + \l__examzh_symbols_paralleleq_lower_xshift_dim,-\l__examzh_symbols_paralleleq_lower_twoline_distance_dim) --++ (\l__examzh_symbols_paralleleq_lower_line_length_dim / 2 ,0)
        (\l__examzh_symbols_paralleleq_upper_twoline_distance_dim / 2 + \l__examzh_symbols_paralleleq_lower_xshift_dim,-\l__examzh_symbols_paralleleq_lower_twoline_distance_dim) --++ (-\l__examzh_symbols_paralleleq_lower_line_length_dim / 2,0)
      ;
    \end{tikzpicture}
  }

\NewDocumentCommand { \paralleleq } { }
  {
    \group_begin:
      \keys_set:nn { exam-zh / symbols }
        {
          paralleleq-upper-line-length = 0.65em,
          paralleleq-lower-line-length = 0.8em,
          paralleleq-upper-twoline-distance = 0.2em,
          paralleleq-lower-twoline-distance = 0.18em,
        }
      \bool_if:NTF \l__examzh_symbols_paralleleq_slant_bool
        {
          % \paralleleq : 倾斜型
          \keys_set:nn { exam-zh / symbols }
            {
              paralleleq-slant-angle = 70,
              paralleleq-lower-xshift = 0.04em
            }
        }
        {
          % \paralleleq* : 垂直型
          \keys_set:nn { exam-zh / symbols }
            {
              paralleleq-slant-angle = 90,
              paralleleq-lower-xshift = 0em
            }
        }
      \mathrel 
        { 
          \__examzh_symbols_symbol_four_size:n 
            { \__examzh_symbols_paralleleq: } 
        }
    \group_end:
  }


% 子集 \subset 真子集 \subseteqq
\keys_define:nn { exam-zh / symbols }
  {
    % 半圆的半径
    subset-radius .dim_set:N = \l__examzh_symbols_subset_semicircle_radius_dim,
    % 半圆右边横线的长度
    subset-upper-linewidth .dim_set:N = \l__examzh_symbols_subset_semicircle_line_width_dim,
    % 下面线的长度
    subset-lower-linewidth .dim_set:N = \l__examzh_symbols_subset_lower_line_width_dim,
    % 上面部分和下面部分的距离
    subset-upper-lower-distance .dim_set:N =  \l__examzh_symbols_subset_upper_lower_distance_dim,
    % 下面部分 两条线的距离
    subsetneqq-lower-twoline-distance .dim_set:N =  \l__examzh_symbols_subsetneqq_lower_twoline_distance_dim,
    % 下面斜线的长度
    subsetneqq-lower-slant-length .dim_set:N = \l__examzh_symbols_subsetneqq_lower_slant_line_length_dim,
    supsetneqq-lower-slant-length .dim_set:N = \l__examzh_symbols_supsetneqq_lower_slant_line_length_dim,
    % 真子集下方斜线的倾斜角度
    subsetneqq-lower-slant-angle .fp_set:N = \l__examzh_symbols_subsetneqq_lower_slant_line_angle_fp,
    supsetneqq-lower-slant-angle .fp_set:N = \l__examzh_symbols_supsetneqq_lower_slant_line_angle_fp,
    % nxxx 类的参数
    % --角度--
    nsubset-n-slant-angle .fp_set:N = \l__examzh_symbols_nsubset_slant_angle_fp,
    nsubseteq-n-slant-angle .fp_set:N = \l__examzh_symbols_nsubseteq_slant_angle_fp,
    nsubsetneqq-n-slant-angle .fp_set:N = \l__examzh_symbols_nsubsetneqq_slant_angle_fp,
    % --长度--
    nsubset-n-slant-length .dim_set:N = \l__examzh_symbols_nsubset_slant_length_dim,
    nsubseteq-n-slant-length .dim_set:N = \l__examzh_symbols_nsubseteq_slant_length_dim,
    nsubsetneqq-n-slant-length .dim_set:N = \l__examzh_symbols_nsubsetneqq_slant_length_dim,
  }
\keys_set:nn { exam-zh / symbols }
  {
    subset-radius = 0.2em,
    subset-upper-linewidth = 0.6em,
    subset-lower-linewidth = 
      {
        \l__examzh_symbols_subset_semicircle_radius_dim + \l__examzh_symbols_subset_semicircle_line_width_dim
      },
    subset-upper-lower-distance = 0.12em,
    subsetneqq-lower-twoline-distance = 0.14em,
    subsetneqq-lower-slant-length     = 0.42em,
    supsetneqq-lower-slant-length     = 0.4em,
    subsetneqq-lower-slant-angle      = 55,
    supsetneqq-lower-slant-angle      = 60,
    nsubset-n-slant-angle             = 65,
    nsubseteq-n-slant-angle           = 68,
    nsubsetneqq-n-slant-angle         = 70,
    nsubset-n-slant-length            = 1em,
    nsubseteq-n-slant-length          = 1em,
    nsubsetneqq-n-slant-length        = 1.2em,
  }

\cs_new:Npn \__examzh_symbols_subset:
  {
    \begin{tikzpicture}[line~cap=round,baseline = {([yshift = -1pt]current~bounding~box.south)}]
      % 半圆 + 两条线
      \draw[line~cap=round] (0,\l__examzh_symbols_subset_semicircle_radius_dim) arc (90 \c_colon_str 270 \c_colon_str \l__examzh_symbols_subset_semicircle_radius_dim)
      (0,\l__examzh_symbols_subset_semicircle_radius_dim) --++ (\l__examzh_symbols_subset_semicircle_line_width_dim,0)
      (0,-\l__examzh_symbols_subset_semicircle_radius_dim) --++ (\l__examzh_symbols_subset_semicircle_line_width_dim,0);
    \end{tikzpicture}
  }
\cs_new:Npn \__examzh_symbols_nsubset:
  {
    \begin{tikzpicture}[line~cap=round,baseline = {([yshift = -1pt]current~bounding~box.south)}]
      % 半圆 + 两条线
      \draw (0,\l__examzh_symbols_subset_semicircle_radius_dim) arc (90 \c_colon_str 270 \c_colon_str \l__examzh_symbols_subset_semicircle_radius_dim)
      (0,\l__examzh_symbols_subset_semicircle_radius_dim) --++ (\l__examzh_symbols_subset_semicircle_line_width_dim,0)
      (0,-\l__examzh_symbols_subset_semicircle_radius_dim) --++ (\l__examzh_symbols_subset_semicircle_line_width_dim,0);
      % 定位斜线的中心
      \coordinate (n-center) at (\l__examzh_symbols_subset_semicircle_line_width_dim / 2 - \l__examzh_symbols_subset_semicircle_radius_dim / 2,0);
      % 画斜线
      \draw[overlay] 
        (n-center) --++ (\fp_use:N \l__examzh_symbols_nsubset_slant_angle_fp \c_colon_str \l__examzh_symbols_nsubset_slant_length_dim / 2)
        (n-center) --++ (\fp_eval:n { \l__examzh_symbols_nsubset_slant_angle_fp + 180} \c_colon_str \l__examzh_symbols_nsubset_slant_length_dim / 2);
    \end{tikzpicture}
  }
\cs_new:Npn \__examzh_symbols_subseteq:
  {
    \begin{tikzpicture}[line~cap=round,baseline = (current~bounding~box.south)]
      % 半圆 + 两条线
      \draw (0,\l__examzh_symbols_subset_semicircle_radius_dim) arc (90 \c_colon_str 270 \c_colon_str \l__examzh_symbols_subset_semicircle_radius_dim)
      (0,\l__examzh_symbols_subset_semicircle_radius_dim) --++ (\l__examzh_symbols_subset_semicircle_line_width_dim,0)
      (0,-\l__examzh_symbols_subset_semicircle_radius_dim) --++ (\l__examzh_symbols_subset_semicircle_line_width_dim,0);
      % 下面的一条线
      \draw (-\l__examzh_symbols_subset_semicircle_radius_dim, - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim) --++ (\l__examzh_symbols_subset_lower_line_width_dim, 0);
    \end{tikzpicture}
  }
\cs_new:Npn \__examzh_symbols_nsubseteq:
  {
    \begin{tikzpicture}[line~cap=round,baseline = (current~bounding~box.south)]
      % 半圆 + 两条线
      \draw (0,\l__examzh_symbols_subset_semicircle_radius_dim) arc (90 \c_colon_str 270 \c_colon_str \l__examzh_symbols_subset_semicircle_radius_dim)
      (0,\l__examzh_symbols_subset_semicircle_radius_dim) --++ (\l__examzh_symbols_subset_semicircle_line_width_dim,0)
      (0,-\l__examzh_symbols_subset_semicircle_radius_dim) --++ (\l__examzh_symbols_subset_semicircle_line_width_dim,0);
      % 下面的一条线
      \draw (-\l__examzh_symbols_subset_semicircle_radius_dim, - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim) --++ (\l__examzh_symbols_subset_lower_line_width_dim, 0);
      % 定位斜线的中心
      \coordinate (n-center) at (\l__examzh_symbols_subset_semicircle_line_width_dim / 2 - \l__examzh_symbols_subset_semicircle_radius_dim / 2,0);
      % 画斜线
      \draw[overlay] 
        (n-center) --++ (\fp_use:N \l__examzh_symbols_nsubseteq_slant_angle_fp \c_colon_str \l__examzh_symbols_nsubseteq_slant_length_dim / 8 * 3.5)
        (n-center) --++ (\fp_eval:n { \l__examzh_symbols_nsubseteq_slant_angle_fp + 180} \c_colon_str \l__examzh_symbols_nsubseteq_slant_length_dim / 8 * 4.5);
    \end{tikzpicture}
  }
% 真子集
\cs_new:Npn \__examzh_symbols_subsetneqq:
  {
    \begin{tikzpicture}[line~cap=round,baseline = (current~bounding~box.south)]
      % 半圆 + 两条线
      \draw (0,\l__examzh_symbols_subset_semicircle_radius_dim) arc (90 \c_colon_str 270 \c_colon_str \l__examzh_symbols_subset_semicircle_radius_dim)
      (0,\l__examzh_symbols_subset_semicircle_radius_dim) --++ (\l__examzh_symbols_subset_semicircle_line_width_dim,0)
      (0,-\l__examzh_symbols_subset_semicircle_radius_dim) --++ (\l__examzh_symbols_subset_semicircle_line_width_dim,0);
      % 下面的两条线
      \draw (-\l__examzh_symbols_subset_semicircle_radius_dim, - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim) --++ (\l__examzh_symbols_subset_lower_line_width_dim, 0)
      (-\l__examzh_symbols_subset_semicircle_radius_dim, - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim - \l__examzh_symbols_subsetneqq_lower_twoline_distance_dim) --++ (\l__examzh_symbols_subset_lower_line_width_dim, 0);
      % 定位斜线的中心点
      \coordinate (lower-center) at 
        (\l__examzh_symbols_subset_semicircle_line_width_dim / 2 - \l__examzh_symbols_subset_semicircle_radius_dim / 2 , - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim - \l__examzh_symbols_subsetneqq_lower_twoline_distance_dim / 2 );
      % 画斜线
      \draw[overlay]
        (lower-center) --++ (\fp_use:N \l__examzh_symbols_subsetneqq_lower_slant_line_angle_fp \c_colon_str \l__examzh_symbols_subsetneqq_lower_slant_line_length_dim / 2)
        (lower-center) --++ (\fp_eval:n {\l__examzh_symbols_subsetneqq_lower_slant_line_angle_fp + 180} \c_colon_str \l__examzh_symbols_subsetneqq_lower_slant_line_length_dim / 2);
    \end{tikzpicture}
  }
\cs_new:Npn \__examzh_symbols_nsubsetneqq:
  {
    \begin{tikzpicture}[line~cap=round,baseline = (current~bounding~box.south)]
      % 半圆 + 两条线
      \draw (0,\l__examzh_symbols_subset_semicircle_radius_dim) arc (90 \c_colon_str 270 \c_colon_str \l__examzh_symbols_subset_semicircle_radius_dim)
      (0,\l__examzh_symbols_subset_semicircle_radius_dim) --++ (\l__examzh_symbols_subset_semicircle_line_width_dim,0)
      (0,-\l__examzh_symbols_subset_semicircle_radius_dim) --++ (\l__examzh_symbols_subset_semicircle_line_width_dim,0);
      % 下面的两条线
      \draw (-\l__examzh_symbols_subset_semicircle_radius_dim, - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim) --++ (\l__examzh_symbols_subset_lower_line_width_dim, 0)
      (-\l__examzh_symbols_subset_semicircle_radius_dim, - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim - \l__examzh_symbols_subsetneqq_lower_twoline_distance_dim) --++ (\l__examzh_symbols_subset_lower_line_width_dim, 0);
      % 定位斜线的中心点
      \coordinate (lower-center) at 
        (\l__examzh_symbols_subset_semicircle_line_width_dim / 2 - \l__examzh_symbols_subset_semicircle_radius_dim / 2 , - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim - \l__examzh_symbols_subsetneqq_lower_twoline_distance_dim / 2 );
      % 画斜线
      \draw[overlay]
        (lower-center) --++ (\fp_use:N \l__examzh_symbols_subsetneqq_lower_slant_line_angle_fp \c_colon_str \l__examzh_symbols_subsetneqq_lower_slant_line_length_dim / 2)
        (lower-center) --++ (\fp_eval:n {\l__examzh_symbols_subsetneqq_lower_slant_line_angle_fp + 180} \c_colon_str \l__examzh_symbols_subsetneqq_lower_slant_line_length_dim / 2);
      % 定位斜线的中心
      \coordinate (n-center) at (\l__examzh_symbols_subset_semicircle_line_width_dim / 2 - \l__examzh_symbols_subset_semicircle_radius_dim / 2,0);
      % 画斜线
      \draw[overlay] 
        (n-center) --++ (\fp_use:N \l__examzh_symbols_nsubsetneqq_slant_angle_fp \c_colon_str \l__examzh_symbols_nsubsetneqq_slant_length_dim / 8 * 3.2)
        (n-center) --++ (\fp_eval:n { \l__examzh_symbols_nsubsetneqq_slant_angle_fp + 180} \c_colon_str \l__examzh_symbols_nsubsetneqq_slant_length_dim / 8 * 4.8);
    \end{tikzpicture}
  }
\cs_new:Npn \__examzh_symbols_supset:
  {
    \begin{tikzpicture}[line~cap=round,baseline = {([yshift = -1pt]current~bounding~box.south)}]
      \draw (0,\l__examzh_symbols_subset_semicircle_radius_dim) arc (90 \c_colon_str -90 \c_colon_str \l__examzh_symbols_subset_semicircle_radius_dim)
      (0,\l__examzh_symbols_subset_semicircle_radius_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim,0)
      (0,-\l__examzh_symbols_subset_semicircle_radius_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim,0);
    \end{tikzpicture}
  }
\cs_new:Npn \__examzh_symbols_nsupset:
  {
    \begin{tikzpicture}[line~cap=round,baseline = {([yshift = -1pt]current~bounding~box.south)}]
      \draw (0,\l__examzh_symbols_subset_semicircle_radius_dim) arc (90 \c_colon_str -90 \c_colon_str \l__examzh_symbols_subset_semicircle_radius_dim)
      (0,\l__examzh_symbols_subset_semicircle_radius_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim,0)
      (0,-\l__examzh_symbols_subset_semicircle_radius_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim,0);
      % 定位斜线的中心
      \coordinate (n-center) at (- \l__examzh_symbols_subset_semicircle_line_width_dim / 2 + \l__examzh_symbols_subset_semicircle_radius_dim / 2,0);
      % 画斜线
      \draw[overlay] 
        (n-center) --++ (\fp_use:N \l__examzh_symbols_nsubset_slant_angle_fp \c_colon_str \l__examzh_symbols_nsubset_slant_length_dim / 2)
        (n-center) --++ (\fp_eval:n { \l__examzh_symbols_nsubset_slant_angle_fp + 180} \c_colon_str \l__examzh_symbols_nsubset_slant_length_dim / 2);
    \end{tikzpicture}
  }
\cs_new:Npn \__examzh_symbols_supseteq:
  {
    \begin{tikzpicture}[line~cap=round,baseline = (current~bounding~box.south)]
      \draw (0,\l__examzh_symbols_subset_semicircle_radius_dim) arc (90 \c_colon_str -90 \c_colon_str \l__examzh_symbols_subset_semicircle_radius_dim);
      \draw (0,\l__examzh_symbols_subset_semicircle_radius_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim,0);
      \draw (0,-\l__examzh_symbols_subset_semicircle_radius_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim,0);
      \draw 
        (\l__examzh_symbols_subset_semicircle_radius_dim, - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim - \l__examzh_symbols_subset_semicircle_radius_dim, 0);
    \end{tikzpicture}
  }
\cs_new:Npn \__examzh_symbols_nsupseteq:
  {
    \begin{tikzpicture}[line~cap=round,baseline = (current~bounding~box.south)]
      \draw (0,\l__examzh_symbols_subset_semicircle_radius_dim) arc (90 \c_colon_str -90 \c_colon_str \l__examzh_symbols_subset_semicircle_radius_dim)
      (0,\l__examzh_symbols_subset_semicircle_radius_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim,0)
      (0,-\l__examzh_symbols_subset_semicircle_radius_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim,0);
      \draw 
        (\l__examzh_symbols_subset_semicircle_radius_dim, - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim - \l__examzh_symbols_subset_semicircle_radius_dim, 0);
      \coordinate (n-center) at (-\l__examzh_symbols_subset_semicircle_line_width_dim / 2 + \l__examzh_symbols_subset_semicircle_radius_dim / 2,0);
      % 画斜线
      \draw[overlay] 
        (n-center) --++ (\fp_use:N \l__examzh_symbols_nsubseteq_slant_angle_fp \c_colon_str \l__examzh_symbols_nsubseteq_slant_length_dim / 8 * 3.5)
        (n-center) --++ (\fp_eval:n { \l__examzh_symbols_nsubseteq_slant_angle_fp + 180} \c_colon_str \l__examzh_symbols_nsubseteq_slant_length_dim / 8 * 4.5);
    \end{tikzpicture}
  }
% 反向真子集
\cs_new:Npn \__examzh_symbols_supsetneqq:
  {
    \begin{tikzpicture}[line~cap=round,baseline = (current~bounding~box.south)]
      \draw (0,\l__examzh_symbols_subset_semicircle_radius_dim) arc (90 \c_colon_str -90 \c_colon_str \l__examzh_symbols_subset_semicircle_radius_dim);
      \draw (0,\l__examzh_symbols_subset_semicircle_radius_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim,0);
      \draw (0,-\l__examzh_symbols_subset_semicircle_radius_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim,0);
      \draw 
        (\l__examzh_symbols_subset_semicircle_radius_dim, - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim - \l__examzh_symbols_subset_semicircle_radius_dim, 0)
        (\l__examzh_symbols_subset_semicircle_radius_dim, - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim - \l__examzh_symbols_subsetneqq_lower_twoline_distance_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim - \l__examzh_symbols_subset_semicircle_radius_dim, 0);
      % 定位斜线的中心点
      \coordinate (center) at 
      (- \l__examzh_symbols_subset_semicircle_line_width_dim / 2 + \l__examzh_symbols_subset_semicircle_radius_dim / 2 , - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim - \l__examzh_symbols_subsetneqq_lower_twoline_distance_dim / 2 );
      % 画斜线
      \draw[overlay]
        (center) --++ (\fp_use:N \l__examzh_symbols_supsetneqq_lower_slant_line_angle_fp \c_colon_str \l__examzh_symbols_supsetneqq_lower_slant_line_length_dim / 2)
        (center) --++ (\fp_eval:n {\l__examzh_symbols_supsetneqq_lower_slant_line_angle_fp + 180} \c_colon_str \l__examzh_symbols_supsetneqq_lower_slant_line_length_dim / 2);
    \end{tikzpicture}
  }
\cs_new:Npn \__examzh_symbols_nsupsetneqq:
  {
    \begin{tikzpicture}[line~cap=round,baseline = (current~bounding~box.south)]
      \draw (0,\l__examzh_symbols_subset_semicircle_radius_dim) arc (90 \c_colon_str -90 \c_colon_str \l__examzh_symbols_subset_semicircle_radius_dim);
      \draw (0,\l__examzh_symbols_subset_semicircle_radius_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim,0);
      \draw (0,-\l__examzh_symbols_subset_semicircle_radius_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim,0);
      \draw 
        (\l__examzh_symbols_subset_semicircle_radius_dim, - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim - \l__examzh_symbols_subset_semicircle_radius_dim, 0)
        (\l__examzh_symbols_subset_semicircle_radius_dim, - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim - \l__examzh_symbols_subsetneqq_lower_twoline_distance_dim) --++ (-\l__examzh_symbols_subset_semicircle_line_width_dim - \l__examzh_symbols_subset_semicircle_radius_dim, 0);
      % 定位斜线的中心点
      \coordinate (center) at 
      (- \l__examzh_symbols_subset_semicircle_line_width_dim / 2 + \l__examzh_symbols_subset_semicircle_radius_dim / 2 , - \l__examzh_symbols_subset_semicircle_radius_dim - \l__examzh_symbols_subset_upper_lower_distance_dim - \l__examzh_symbols_subsetneqq_lower_twoline_distance_dim / 2 );
      % 画斜线
      \draw[overlay] 
        (center) --++ (\fp_use:N \l__examzh_symbols_supsetneqq_lower_slant_line_angle_fp \c_colon_str \l__examzh_symbols_supsetneqq_lower_slant_line_length_dim / 2)
        (center) --++ (\fp_eval:n {\l__examzh_symbols_supsetneqq_lower_slant_line_angle_fp + 180} \c_colon_str \l__examzh_symbols_supsetneqq_lower_slant_line_length_dim / 2);
      % 定位斜线的中心
      \coordinate (n-center) at (-\l__examzh_symbols_subset_semicircle_line_width_dim / 2 + \l__examzh_symbols_subset_semicircle_radius_dim / 2,0);
      % 画斜线
      \draw[overlay] 
        (n-center) --++ (\fp_use:N \l__examzh_symbols_nsubsetneqq_slant_angle_fp \c_colon_str \l__examzh_symbols_nsubsetneqq_slant_length_dim / 8 * 3.2)
        (n-center) --++ (\fp_eval:n { \l__examzh_symbols_nsubsetneqq_slant_angle_fp + 180} \c_colon_str \l__examzh_symbols_nsubsetneqq_slant_length_dim / 8 * 4.8);
    \end{tikzpicture}
  }
\AtBeginDocument
  {
    \cs_set_eq:NN \__examzh_symbols_old_subset: \subset
    \cs_set_eq:NN \__examzh_symbols_old_supset: \supset
    \cs_set_eq:NN \__examzh_symbols_old_nsubset: \nsubset
    \cs_set_eq:NN \__examzh_symbols_old_nsupset: \nsupset
    \cs_set_eq:NN \__examzh_symbols_old_subseteq: \subseteq
    \cs_set_eq:NN \__examzh_symbols_old_supseteq: \supseteq
    \cs_set_eq:NN \__examzh_symbols_old_nsubseteq: \nsubseteq
    \cs_set_eq:NN \__examzh_symbols_old_nsupseteq: \nsupseteq
    \cs_set_eq:NN \__examzh_symbols_old_subsetneqq: \subsetneqq
    \cs_set_eq:NN \__examzh_symbols_old_supsetneqq: \supsetneqq
    % \cs_set_eq:NN \__examzh_symbols_old_nsubsetneqq: \nsubsetneqq
    % \cs_set_eq:NN \__examzh_symbols_old_nsupsetneqq: \nsupsetneqq
    \RenewDocumentCommand { \subset } { s }
      {
        \group_begin:
          \keys_set:nn { exam-zh / symbols }
            {
              subset-radius = 0.2em,
              subset-upper-linewidth  = 0.6em
            }
          \IfBooleanTF {#1}
            { \__examzh_symbols_old_subset: }
            {
              \mathrel 
                { 
                  \__examzh_symbols_symbol_four_size:n 
                    { \__examzh_symbols_subset: } 
                }
            }
        \group_end:
      }
    \RenewDocumentCommand { \nsubset } { s }
      {
        \group_begin:
          \keys_set:nn { exam-zh / symbols }
            {
              subset-radius = 0.2em,
              subset-upper-linewidth = 0.6em,
              nsubset-n-slant-angle       = 65,
              nsubset-n-slant-length      = 1em,
            }
            \IfBooleanTF {#1}
              { \__examzh_symbols_old_nsubset: }
              {
                \mathrel 
                  { 
                    \__examzh_symbols_symbol_four_size:n 
                      { \__examzh_symbols_nsubset: } 
                  }
              }
        \group_end:
      }
    \RenewDocumentCommand { \subseteq } { s }
      {
        \group_begin:
          \keys_set:nn { exam-zh / symbols }
            {
              subset-radius = 0.2em,
              subset-upper-linewidth = 0.6em,
              subset-upper-lower-distance = 0.12em,
              subset-lower-linewidth = 
                {
                  \l__examzh_symbols_subset_semicircle_radius_dim + \l__examzh_symbols_subset_semicircle_line_width_dim
                }
            }
            \IfBooleanTF {#1}
              { \__examzh_symbols_old_subseteq: }
              {
                \mathrel 
                  { 
                    \__examzh_symbols_symbol_four_size:n 
                      { \__examzh_symbols_subseteq: } 
                  }
              }
        \group_end:
      }
    \RenewDocumentCommand { \nsubseteq } { s }
      {
        \group_begin:
          \keys_set:nn { exam-zh / symbols }
            {
              subset-radius = 0.2em,
              subset-upper-linewidth = 0.6em,
              subset-lower-linewidth = 
                {
                  \l__examzh_symbols_subset_semicircle_radius_dim + \l__examzh_symbols_subset_semicircle_line_width_dim
                },
              subset-upper-lower-distance = 0.12em,
              nsubseteq-n-slant-angle           = 68,
              nsubseteq-n-slant-length          = 1em,
            }
            \IfBooleanTF {#1}
              { \__examzh_symbols_old_nsubseteq: }
              {
                \mathrel 
                  { 
                    \__examzh_symbols_symbol_four_size:n 
                      { \__examzh_symbols_nsubseteq: } 
                  }
              }
        \group_end:
      }
    \RenewDocumentCommand { \subsetneqq } { s }
      {
        \group_begin:
          \keys_set:nn { exam-zh / symbols }
            {
              subset-radius = 0.2em,
              subset-upper-linewidth = 0.6em,
              subset-lower-linewidth = 
                {
                  \l__examzh_symbols_subset_semicircle_radius_dim + \l__examzh_symbols_subset_semicircle_line_width_dim
                },
              subset-upper-lower-distance = 0.12em,
              subsetneqq-lower-twoline-distance = 0.14em,
              subsetneqq-lower-slant-length     = 0.42em,
              subsetneqq-lower-slant-angle      = 55,
            }
            \IfBooleanTF {#1}
              { \__examzh_symbols_old_subsetneqq: }
              {
                \mathrel 
                  { 
                    \__examzh_symbols_symbol_four_size:n 
                      { \__examzh_symbols_subsetneqq: } 
                  }
              }
        \group_end:
      }
    \NewDocumentCommand { \nsubsetneqq } { }
      {
        \group_begin:
          \keys_set:nn { exam-zh / symbols }
            {
              subset-radius = 0.2em,
              subset-upper-linewidth = 0.6em,
              subset-lower-linewidth = 
                {
                  \l__examzh_symbols_subset_semicircle_radius_dim + \l__examzh_symbols_subset_semicircle_line_width_dim
                },
              subset-upper-lower-distance = 0.12em,
              subsetneqq-lower-twoline-distance = 0.14em,
              subsetneqq-lower-slant-length     = 0.42em,
              subsetneqq-lower-slant-angle      = 55,
              nsubsetneqq-n-slant-angle         = 70,
              nsubsetneqq-n-slant-length        = 1.2em,
            }
          \mathrel 
            { 
              \__examzh_symbols_symbol_four_size:n 
                { \__examzh_symbols_nsubsetneqq: } 
            }
        \group_end:
      }
    \RenewDocumentCommand { \supset } { s }
      {
        \group_begin:
          \keys_set:nn { exam-zh / symbols }
            {
              subset-radius = 0.2em,
              subset-upper-linewidth  = 0.6em
            }
          \IfBooleanTF {#1}
            { \__examzh_symbols_old_supset: }
            {
              \mathrel 
                { 
                  \__examzh_symbols_symbol_four_size:n 
                    { \__examzh_symbols_supset: } 
                }
            }
        \group_end:
      }
    \RenewDocumentCommand { \nsupset } { s }
      {
        \group_begin:
          \keys_set:nn { exam-zh / symbols }
            {
              subset-radius = 0.2em,
              subset-upper-linewidth = 0.6em,
              nsubset-n-slant-angle       = 65,
              nsubset-n-slant-length      = 1em,
            }
            \IfBooleanTF {#1}
              { \__examzh_symbols_old_nsupset: }
              {
                \mathrel 
                  { 
                    \__examzh_symbols_symbol_four_size:n 
                      { \__examzh_symbols_nsupset: } 
                  }
              }
        \group_end:
      }
    \RenewDocumentCommand { \supseteq } { s }
      {
        \group_begin:
          \keys_set:nn { exam-zh / symbols }
            {
              subset-radius = 0.2em,
              subset-upper-linewidth = 0.6em,
              subset-upper-lower-distance = 0.12em,
              subset-lower-linewidth = 
                {
                  \l__examzh_symbols_subset_semicircle_radius_dim + \l__examzh_symbols_subset_semicircle_line_width_dim
                }
            }
            \IfBooleanTF {#1}
              { \__examzh_symbols_old_supseteq: }
              {
                \mathrel 
                  { 
                    \__examzh_symbols_symbol_four_size:n 
                      { \__examzh_symbols_supseteq: } 
                  }
              }
        \group_end:
      }
    \RenewDocumentCommand { \nsupseteq } { s }
      {
        \group_begin:
          \keys_set:nn { exam-zh / symbols }
            {
              subset-radius = 0.2em,
              subset-upper-linewidth = 0.6em,
              subset-lower-linewidth = 
                {
                  \l__examzh_symbols_subset_semicircle_radius_dim + \l__examzh_symbols_subset_semicircle_line_width_dim
                },
              subset-upper-lower-distance = 0.12em,
              nsubseteq-n-slant-angle           = 68,
              nsubseteq-n-slant-length          = 1em,
            }
            \IfBooleanTF {#1}
              { \__examzh_symbols_old_nsupseteq: }
              {
                \mathrel 
                  { 
                    \__examzh_symbols_symbol_four_size:n 
                      { \__examzh_symbols_nsupseteq: } 
                  }
              }
        \group_end:
      }
    \RenewDocumentCommand { \supsetneqq } { s }
      {
        \group_begin:
          \keys_set:nn { exam-zh / symbols }
            {
              subset-radius = 0.2em,
              subset-upper-linewidth = 0.6em,
              subset-lower-linewidth = 
                {
                  \l__examzh_symbols_subset_semicircle_radius_dim + \l__examzh_symbols_subset_semicircle_line_width_dim
                },
              subset-upper-lower-distance = 0.12em,
              subsetneqq-lower-twoline-distance = 0.14em,
              supsetneqq-lower-slant-length     = 0.4em,
              supsetneqq-lower-slant-angle      = 60,
            }
            \IfBooleanTF {#1}
              { \__examzh_symbols_old_supsetneqq: }
              {
                \mathrel 
                  { 
                    \__examzh_symbols_symbol_four_size:n 
                      { \__examzh_symbols_supsetneqq: } 
                  }
              }
        \group_end:
      }
    \NewDocumentCommand { \nsupsetneqq } { }
      {
        \group_begin:
          \keys_set:nn { exam-zh / symbols }
            {
              subset-radius = 0.2em,
              subset-upper-linewidth = 0.6em,
              subset-lower-linewidth = 
                {
                  \l__examzh_symbols_subset_semicircle_radius_dim + \l__examzh_symbols_subset_semicircle_line_width_dim
                },
              subset-upper-lower-distance = 0.12em,
              subsetneqq-lower-twoline-distance = 0.14em,
              supsetneqq-lower-slant-length     = 0.4em,
              supsetneqq-lower-slant-angle      = 60,
              nsubsetneqq-n-slant-angle         = 70,
              nsubsetneqq-n-slant-length        = 1.2em,
            }
          \mathrel 
            { 
              \__examzh_symbols_symbol_four_size:n 
                { \__examzh_symbols_nsupsetneqq: } 
            }
        \group_end:
      }
    % \RenewDocumentCommand { \subset } { s }
    %   {
    %     \group_begin:
    %       \keys_set:nn { exam-zh / symbols }
    %         {
    %           subset-radius = 0.2em,
    %           subset-upper-linewidth = 0.6em,
    %           subset-lower-linewidth = 
    %             {
    %               \l__examzh_symbols_subset_semicircle_radius_dim + \l__examzh_symbols_subset_semicircle_line_width_dim
    %             },
    %           subset-upper-lower-distance = 0.12em,
    %           subsetneqq-lower-twoline-distance = 0.14em,
    %           subsetneqq-lower-slant-length     = 0.42em,
    %           supsetneqq-lower-slant-length     = 0.4em,
    %           subsetneqq-lower-slant-angle      = 55,
    %           supsetneqq-lower-slant-angle      = 60,
    %           nsubset-n-slant-angle             = 65,
    %           nsubseteq-n-slant-angle           = 68,
    %           nsubsetneqq-n-slant-angle         = 70,
    %           nsubset-n-slant-length            = 1em,
    %           nsubseteq-n-slant-length          = 1em,
    %           nsubsetneqq-n-slant-length        = 1.2em,
    %         }
    %         \IfBooleanTF {#1}
    %           { \__examzh_symbols_old_subset: }
    %           {
    %             \mathrel 
    %               { 
    %                 \__examzh_symbols_symbol_four_size:n 
    %                   { \__examzh_symbols_subset: } 
    %               }
    %           }
    %     \group_end:
    %   }
    \RenewDocumentCommand { \subseteq } { s }
      {
        \group_begin:
          \keys_set:nn { exam-zh / symbols }
            {
              subset-radius = 0.2em,
              subset-upper-linewidth = 0.6em,
              subset-lower-linewidth = 
                {
                  \l__examzh_symbols_subset_semicircle_radius_dim + \l__examzh_symbols_subset_semicircle_line_width_dim
                },
              subset-upper-lower-distance = 0.12em,
            }
            \IfBooleanTF {#1}
              { \__examzh_symbols_old_subseteq: }
              {
                \mathrel 
                  { 
                    \__examzh_symbols_symbol_four_size:n 
                      { \__examzh_symbols_subseteq: } 
                  }
              }
        \group_end:
      }
      
  }



% 并集 交集 cap cup

% 直线长度
\dim_new:N \l__examzh_symbols_cap_line_length_dim
\dim_new:N \l__examzh_symbols_cup_line_length_dim
% 半径大小
\dim_new:N \l__examzh_symbols_cap_radius_dim
\dim_new:N \l__examzh_symbols_cup_radius_dim

\cs_new:Npn \__examzh_symbols_cap:
  {
    \begin{tikzpicture}[line~cap=round, line~width = 0.6pt,baseline = {([yshift = 1.2pt]current~bounding~box.south)}]
      \draw (\l__examzh_symbols_cap_radius_dim,0) arc (0 \c_colon_str 180 \c_colon_str \l__examzh_symbols_cap_radius_dim);
      \draw 
        (\l__examzh_symbols_cap_radius_dim,0) --++ (0,-\l__examzh_symbols_cap_line_length_dim)
        (-\l__examzh_symbols_cap_radius_dim,0) --++ (0,-\l__examzh_symbols_cap_line_length_dim);
    \end{tikzpicture}
  }
\cs_new:Npn \__examzh_symbols_cup:
  {
    \begin{tikzpicture}[line~cap=round, line~width = 0.6pt,baseline = {([yshift = 1.8pt]current~bounding~box.south)}]
      \draw (-\l__examzh_symbols_cup_radius_dim,0) arc (180 \c_colon_str 360 \c_colon_str \l__examzh_symbols_cup_radius_dim);
      \draw 
        (\l__examzh_symbols_cup_radius_dim,0) --++ (0,\l__examzh_symbols_cup_line_length_dim)
        (-\l__examzh_symbols_cup_radius_dim,0) --++ (0,\l__examzh_symbols_cup_line_length_dim);
    \end{tikzpicture}
  }
\AtBeginDocument
  {
    \cs_set_eq:NN \__examzh_symbols_old_cap: \cap
    \cs_set_eq:NN \__examzh_symbols_old_cup: \cup
    \RenewDocumentCommand { \cap } { s }
      {
        \group_begin:
          \dim_set:Nn \l__examzh_symbols_cap_line_length_dim { 0.56em }
          \dim_set:Nn \l__examzh_symbols_cap_radius_dim { 0.28em }
          \IfBooleanTF {#1}
            { \__examzh_symbols_old_cap: }
            {
              \mathrel 
                { 
                  \__examzh_symbols_symbol_four_size:n 
                    { \__examzh_symbols_cap: } 
                }
            }
        \group_end:
      }
    \RenewDocumentCommand { \cup } { s }
      {
        \group_begin:
          \dim_set:Nn \l__examzh_symbols_cup_line_length_dim { 0.53em }
          \dim_set:Nn \l__examzh_symbols_cup_radius_dim { 0.28em }
          \IfBooleanTF {#1}
            { \__examzh_symbols_old_cup: }
            {
              \mathrel 
                { 
                  \__examzh_symbols_symbol_four_size:n 
                    { \__examzh_symbols_cup: } 
                }
            }
        \group_end:
      }
  }
% 相似
\cs_new:Npn \__examzh_symbols_sim:
  {
    \begin{tikzpicture}[line~cap=round, line~width = 0.6pt,baseline = {([yshift = -1pt]current~bounding~box.south)}]
      \draw
        (-.25em,1.15ex) 
          .. controls (-.55em,1.15ex) and (-.51em,.23ex) .. (-.275em,.23ex) 
          .. controls (0,.23ex) and (0,1.15ex) .. (.275em,1.15ex) 
          .. controls (.51em,1.15ex) and (.55em,.23ex) .. (.25em,.23ex);
    \end{tikzpicture}
  }
\cs_new:Npn \__examzh_symbols_nsim:
  {
    \begin{tikzpicture}[line~width = 0.6pt,line~cap=round, baseline = {([yshift = 1pt]current~bounding~box.south)}]
      \draw
        (-.25em,1.15ex) 
          .. controls (-.55em,1.15ex) and (-.51em,.23ex) .. (-.275em,.23ex) 
          .. controls (0,.23ex) and (0,1.15ex) .. (.275em,1.15ex) 
          .. controls (.51em,1.15ex) and (.55em,.23ex) .. (.25em,.23ex);
      \draw (-0.15em,-0.2ex) --++ (70 \c_colon_str 0.8em);
    \end{tikzpicture}
  }
\AtBeginDocument
  {
    \cs_set_eq:NN \__examzh_symbols_old_sim: \sim
    \RenewDocumentCommand { \sim } { s }
      {
        \IfBooleanTF {#1}
          { \__examzh_symbols_old_sim: }
          {
            \mathrel { \__examzh_symbols_symbol_four_size:n { \__examzh_symbols_sim: } }
          }
      }
    \RenewDocumentCommand { \nsim } {  }
      {
        \mathrel { \__examzh_symbols_symbol_four_size:n { \__examzh_symbols_nsim: } }
      }
  }

% 全等
\cs_new:Npn \__examzh_symbols_cong:
  {
    \begin{tikzpicture}[line~cap=round, baseline]
      \draw
        (-.2em,1.35ex) 
          .. controls (-.46em,1.6ex) and (-.54em,.65ex) .. (-.25em,.65ex)
          .. controls (-.06em,.65ex) and (.06em,1.35ex) .. (.25em,1.35ex)
          .. controls (.54em,1.35ex) and (.46em,.4ex) .. (.2em,.65ex)
        (-.46em,.4ex) -- (.46em,.4ex)
        (-.46em,0ex) -- (.46em,0ex);
    \end{tikzpicture}
  }
\cs_new:Npn \__examzh_symbols_ncong:
  {
    \begin{tikzpicture}[line~cap=round, baseline]
      \draw
        (-.2em,1.35ex) 
          .. controls (-.46em,1.6ex) and (-.54em,.65ex) .. (-.25em,.65ex)
          .. controls (-.06em,.65ex) and (.06em,1.35ex) .. (.25em,1.35ex)
          .. controls (.54em,1.35ex) and (.46em,.4ex) .. (.2em,.65ex)
        (-.46em,.4ex) -- (.46em,.4ex)
        (-.46em,0ex) -- (.46em,0ex);
      \draw (-0.22em,-0.4ex) --++ (66 \c_colon_str 1em);
    \end{tikzpicture}
  }

\AtBeginDocument
  {
    \cs_set_eq:NN \__examzh_symbols_old_cong: \backcong
    \RenewDocumentCommand { \cong } { s }
      {
        \IfBooleanTF {#1}
          { \__examzh_symbols_old_cong: }
          {
            \mathrel { \__examzh_symbols_symbol_four_size:n { \__examzh_symbols_cong: } }
          }
      }
    \RenewDocumentCommand { \ncong } { }
      {
        \mathrel { \__examzh_symbols_symbol_four_size:n { \__examzh_symbols_ncong: } }
      }
  }

% 处理符号的不同情况的大小
\cs_set_eq:NN \NewDocumentCommand:Nnn \NewDocumentCommand
\cs_set_eq:NN \RenewDocumentCommand:Nnn \RenewDocumentCommand
\cs_generate_variant:Nn \NewDocumentCommand:Nnn { cnn }
\cs_generate_variant:Nn \RenewDocumentCommand:Nnn { cnn }

\cs_new:Npn \__examzh_symbols_new_command_without_star_or_old_version:n #1
  {
    \NewDocumentCommand:cnn { #1 } { }
      {
        \mathrel 
          { 
            \__examzh_symbols_symbol_four_size:n 
              { \use:c { __examzh_symbols_ #1 : } } 
          }
      }
  }

\cs_new:Npn \__examzh_symbols_new_command_with_star_and_old_version:n #1
  {
    \RenewDocumentCommand:cnn { #1 } { s }
      {
        \IfBooleanTF {##1}
          { \use:c { __examzh_symbols_old_ #1 : } }
          {
            \mathrel 
              { 
                \__examzh_symbols_symbol_four_size:n 
                  { \use:c { __examzh_symbols_ #1 : } } 
              }
          }
      }
  }
\cs_new:Npn \__examzh_symbols_symbol_four_size:n #1
  {
    \mathchoice
      {
        \hbox:n 
          {
            \fontsize{\tf@size}{\tf@size}\selectfont #1
          }
      }
      {
        \hbox:n 
          {
            \fontsize{\tf@size}{\tf@size}\selectfont #1
          }
      }
      {
        \hbox:n
          {
            \fontsize{\sf@size}{\sf@size}\selectfont #1
          }
      }
      {
        \hbox:n
          {
            \fontsize{\ssf@size}{\ssf@size}\selectfont #1 
          }
      }
  }

\endinput