luamplib + 中文

\documentclass{article}
\usepackage[match]{luatexja-fontspec}
\setmainjfont[BoldFont=Noto Sans CJK TC Medium,
    YokoFeatures = {JFM = zh_TW/quanjiao},
    AltFont={{Range="20000-"2A6DF,Font=HanaMinB},  % CJK ExtB
             {Range="FE30-"FE4F,Font=HanaMinA},    %一些全型符號
             {Range="FF1F-"FF1F,Font=HanaMinA},    %一點明體的驚嘆號及問號過大
             {Range="FF01-"FF01,Font=HanaMinA},    %用 HanaMinA 取代
             {Range="2200-"22FF,Font=HanaMinA},    %全型數學運算子
             {Range="2580-"259F,Font=HanaMinA},    %全型方塊
             {Range="3010-"3011,Font=HanaMinA},    %粗方括號
             {Range="300C-"300F,Font=HanaMinA},    %單雙引號
             {Range="2A700-"2B73F,Font=HanaMinB},  % CJK ExtC
             {Range="2B740-"2B81F,Font=HanaMinB}}]{I.MingCP}
\setsansjfont[BoldFont=Noto Sans CJK TC Medium,
    YokoFeatures = {JFM = zh_TW/quanjiao}]{Taipei Sans TC Beta Light}
\setjfontfamily\iyan{I.Ngaan}
\usepackage{luamplib}
\usepackage{zhlipsum}
% 讓圖檔置中以便配合 LaTeX figure 環境的 caption 位置
\everymplib{%
  verbatimtex
    \center\leavevmode
  etex;
  beginfig(1);}
\everyendmplib{%
  verbatimtex
    \endcenter
  etex;
  endfig;}

\begin{document}

\zhlipsum[9][name=trad]

\begin{figure}
\begin{mplibcode}
  u:=3cm;
  path p;
  p = (0,1u)..(1u,0)...(0,-1u);
  fill p{dir(157)}..(0,0){dir(23)}..{dir(157)}cycle;
  draw p..(-1u,0)..cycle;
  fill (0,-.6u)..(0.1u,-.5u)..(0,-.4u)..(-.1u,-.5u)..cycle withcolor white;
  fill (0,.6u)..(.1u,.5u)..(0,.4u)..(-.1u,.5u)..cycle;
  label.bot(btex \Large 仿太極陰陽魚圖 etex,(0,-1.2u));
\end{mplibcode}
\caption{Luamplib 的測試.}
\end{figure}

\zhlipsum[1][name=trad]

\end{document}