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diff --git a/Master/texmf-dist/tex/latex/zhlineskip/zhlineskip.sty b/Master/texmf-dist/tex/latex/zhlineskip/zhlineskip.sty
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+%
+% Copyright (C) 2018 by Ruixi Zhang <ruixizhang42@gmail.com>
+%
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+%   http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status `maintained'.
+%
+% The Current Maintainer of this work is Ruixi Zhang.
+%
+% This work consists of the files zhlineskip.sty,
+%                                 zhlineskip-man.tex,
+%                                 zhlineskip-test.tex,
+%                                 Latinmetrics.pdf,
+%                                 CJKmetrics.pdf,
+%                                 README.md
+%           and the derived file  zhlineskip-man.pdf.
+%
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{zhlineskip}[%
+  2018/10/28 v1.0c Line spacing for CJK documents]
+
+\RequirePackage{kvoptions}
+\RequirePackage{xintexpr}
+\RequirePackage{etoolbox}
+
+\SetupKeyvalOptions{
+  family=ZhLS,
+  prefix=ZhLS@
+}
+\DeclareStringOption[1.5]{bodytextleadingratio}[1.5]
+\DeclareStringOption[1.48]{footnoteleadingratio}[1.48]
+\DeclareBoolOption[true]{restoremathleading}
+\DeclareBoolOption[false]{UseMSWordMultipleLineSpacing}
+\DeclareStringOption[1.15]{MSWordLineSpacingMultiple}[1.15]
+\DeclareStringOption[1.296875]{MSWordSinglespaceRatio}[1.296875]
+\DeclareDefaultOption{%
+  \PackageError{\@currname}{%
+    Unknown option `\CurrentOption'%
+  }{%
+    Available package options are:\MessageBreak
+    \space\space`bodytextleadingratio',\MessageBreak
+    \space\space`footnoteleadingratio',\MessageBreak
+    \space\space`restoremathleading',\MessageBreak
+    \space\space`UseMSWordMultipleLineSpacing',\MessageBreak
+    \space\space`MSWordLineSpacingMultiple',\MessageBreak
+    \space\space`MSWordSinglespaceRatio'%
+  }%
+}
+\ProcessKeyvalOptions*
+
+\begingroup
+  \normalsize
+  \@tempdima\f@size\p@
+  \@tempdimb\f@baselineskip
+  \edef\@tempnuma{\the\numexpr\@tempdima\relax}%
+  \ifZhLS@UseMSWordMultipleLineSpacing
+    \PackageWarningNoLine{\@currname}{%
+      Use Microsoft Word multiple line spacing\MessageBreak
+      Singlespace to fontsize ratio = `\ZhLS@MSWordSinglespaceRatio'\MessageBreak
+      Multiple = `\ZhLS@MSWordLineSpacingMultiple'%
+    }%
+    \xdef\ZhLS@targetbodyleading{%
+      \@tempnuma*\ZhLS@MSWordSinglespaceRatio*\ZhLS@MSWordLineSpacingMultiple
+    }%
+  \else
+    \xdef\ZhLS@targetbodyleading{%
+      \@tempnuma*\ZhLS@bodytextleadingratio
+    }%
+  \fi
+  \xdef\ZhLS@defaultbodyleading{\the\numexpr\@tempdimb\relax}%
+\endgroup
+\begingroup
+  \footnotesize
+  \@tempdima\f@size\p@
+  \@tempdimb\f@baselineskip
+  \edef\@tempnuma{\the\numexpr\@tempdima\relax}%
+  \ifZhLS@UseMSWordMultipleLineSpacing
+    \xdef\ZhLS@targetfootleading{%
+      \@tempnuma*\ZhLS@MSWordSinglespaceRatio*\ZhLS@MSWordLineSpacingMultiple
+    }%
+  \else
+    \xdef\ZhLS@targetfootleading{%
+      \@tempnuma*\ZhLS@footnoteleadingratio
+    }%
+  \fi
+  \xdef\ZhLS@defaultfootleading{\the\numexpr\@tempdimb\relax}%
+\endgroup
+\edef\ZhLS@bodylinespread{%
+  \xintthefloatexpr\xintexpr
+    \ZhLS@targetbodyleading/\ZhLS@defaultbodyleading\relax\relax
+}
+\edef\ZhLS@footlinespread{%
+  \xintthefloatexpr\xintexpr
+    \ZhLS@targetfootleading/\ZhLS@defaultfootleading\relax\relax
+}
+
+\linespread{\ZhLS@bodylinespread}\selectfont
+
+\patchcmd\@footnotetext
+  {\reset@font}
+  {\def\baselinestretch{\ZhLS@footlinespread}\reset@font}
+  {}{}
+\patchcmd\@mpfootnotetext
+  {\reset@font}
+  {\def\baselinestretch{\ZhLS@footlinespread}\reset@font}
+  {}{}
+\def\ZhLS@resetfootnotesep#1{%
+  \begingroup
+    \footnotesize
+    \linespread{#1}\selectfont
+    \global\footnotesep=\ht\strutbox
+  \endgroup
+}
+\ZhLS@resetfootnotesep{\ZhLS@footlinespread}
+
+\newcommand*\SetTextEnvironmentSinglespace[1]{%
+  \def\ZhLS@textlinespread{#1}%
+}
+\SetTextEnvironmentSinglespace{1}
+\newcommand*\RestoreTextEnvironmentLeading{%
+  \ZhLS@restoretextenvironmentleading
+}
+\def\ZhLS@restoretextenvironmentleading#1{%
+  \AtBeginEnvironment{#1}{%
+    \linespread{\ZhLS@textlinespread}\selectfont\ignorespaces
+  }%
+}
+
+\ifZhLS@restoremathleading
+  \RequirePackage{mathtools}
+  \newcommand*\SetMathEnvironmentSinglespace[1]{%
+    \def\ZhLS@mathlinespread{#1}%
+  }
+  \SetMathEnvironmentSinglespace{1}
+  \newcommand*\RestoreMathEnvironmentLeading{%
+    \ZhLS@restoremathenvironmentleading
+  }
+  \def\ZhLS@restoremathenvironmentleading#1{%
+    \AtBeginEnvironment{#1}{%
+      \linespread{\ZhLS@mathlinespread}\selectfont\ignorespaces
+    }%
+  }
+  \RestoreMathEnvironmentLeading{array}
+  \RestoreMathEnvironmentLeading{matrix}
+  \RestoreMathEnvironmentLeading{pmatrix}
+  \RestoreMathEnvironmentLeading{bmatrix}
+  \RestoreMathEnvironmentLeading{Bmatrix}
+  \RestoreMathEnvironmentLeading{vmatrix}
+  \RestoreMathEnvironmentLeading{Vmatrix}
+  \RestoreMathEnvironmentLeading{cases}
+  \RestoreMathEnvironmentLeading{aligned}
+  \RestoreMathEnvironmentLeading{alignedat}
+  \RestoreMathEnvironmentLeading{gathered}
+  \patchcmd\start@gather
+    {\collect@body}
+    {\linespread{\ZhLS@mathlinespread}\selectfont\collect@body}
+    {}{}
+  \patchcmd\start@align
+    {\collect@body}
+    {\linespread{\ZhLS@mathlinespread}\selectfont\collect@body}
+    {}{}
+  \patchcmd\start@multline
+    {\collect@body}
+    {\linespread{\ZhLS@mathlinespread}\selectfont\collect@body}
+    {}{}
+  \patchcmd\gather@split
+    {\spread@equation}
+    {\linespread{\ZhLS@mathlinespread}\selectfont\spread@equation}
+    {}{}
+  \RestoreMathEnvironmentLeading{matrix*}
+  \RestoreMathEnvironmentLeading{pmatrix*}
+  \RestoreMathEnvironmentLeading{bmatrix*}
+  \RestoreMathEnvironmentLeading{Bmatrix*}
+  \RestoreMathEnvironmentLeading{vmatrix*}
+  \RestoreMathEnvironmentLeading{Vmatrix*}
+  \RestoreMathEnvironmentLeading{cases*}
+  \RestoreMathEnvironmentLeading{dcases}
+  \RestoreMathEnvironmentLeading{dcases*}
+  \RestoreMathEnvironmentLeading{rcases}
+  \RestoreMathEnvironmentLeading{rcases*}
+  \RestoreMathEnvironmentLeading{drcases}
+  \RestoreMathEnvironmentLeading{drcases*}
+  \RestoreMathEnvironmentLeading{multlined}
+  \RestoreMathEnvironmentLeading{lgathered}
+  \RestoreMathEnvironmentLeading{rgathered}
+\else
+  \PackageWarningNoLine{\@currname}{%
+    Leading in multi-line math will be stretched%
+  }%
+  \newcommand*\SetMathEnvironmentSinglespace[1]{%
+    \PackageError{zhlineskip}{%
+      Cannot use \string\SetMathEnvironmentSinglespace\space here%
+    }{%
+      Try loading zhlineskip with option\MessageBreak
+      \space\space`restoremathleading=true'%
+    }%
+  }
+  \newcommand*\RestoreMathEnvironmentLeading[1]{%
+    \PackageError{zhlineskip}{%
+      Cannot use \string\RestoreMathEnvironmentLeading\space here%
+    }{%
+      Try loading zhlineskip with option\MessageBreak
+      \space\space`restoremathleading=true'%
+    }%
+  }
+\fi
+
+\endinput