diff --git a/algo.sty b/algo.sty
new file mode 100644
index 0000000..bf6d54c
--- /dev/null
+++ b/algo.sty
@@ -0,0 +1,14 @@
+\def\begin@lg{\begin{minipage}{1in}\begin{tabbing}
+        \quad\=\qquad\=\qquad\=\qquad\=\qquad\=\qquad\=\qquad\=\kill}
+\def\end@lg{\end{tabbing}\end{minipage}}
+
+\newenvironment{algorithm}
+{\begin{tabular}{|l|}\hline\begin@lg}
+{\end@lg\\\hline\end{tabular}}
+
+\newenvironment{algo}
+{\begin{center}\begin{algorithm}}
+{\end{algorithm}\end{center}}
+
+\def\argmax{\operatornamewithlimits{arg\,max}}
+\def\argmin{\operatornamewithlimits{arg\,min}}
diff --git a/main.tex b/main.tex
index a7eb7dc..d862db3 100644
--- a/main.tex
+++ b/main.tex
@@ -1,6 +1,7 @@
 \documentclass[11pt]{article}
 
 \usepackage[sans]{myctex}
+\usepackage{algo}
 
 
 \title{思源黑体 + FiraGO}
@@ -31,5 +32,15 @@ s.t.&   &   (1-\delta_x - \delta_y) d^2(x,y)\leq \|v_x-v_y\|^2 &\leq (c^2+(\delt
 \end{aligned}
 \end{equation}
 
+\begin{figure}
+\begin{algo}
+sdf\\
+\quad sdf\\
+return ss
+\end{algo}
+\caption{this is a fig 这是图}
+\end{figure}
+\textsc{Sans}
+\texttt{monolM}
 
 \end{document}
\ No newline at end of file
diff --git a/myctex.sty b/myctex.sty
index 004a847..c376c12 100644
--- a/myctex.sty
+++ b/myctex.sty
@@ -1,5 +1,6 @@
 \ProvidesPackage{myctex}
 \usepackage[fontset=none, scheme=plain]{ctex}
+\usepackage{fontspec}
 
 \newif\ifmyctex@sans
 \myctex@sansfalse % Default is serif
@@ -11,22 +12,17 @@
 
 % Now use the conditional
 \ifmyctex@sans
-  \renewcommand{\ttdefault}{lmtt}
-  \setCJKmainfont{Source Han Sans SC}
-  \setCJKsansfont{Source Han Sans SC}
-  \setCJKmonofont{Source Han Sans SC}
-  \RequirePackage{unicode-math}
-  \unimathsetup{math-style=ISO, bold-style=ISO, mathrm=sym}
-	\setmainfont{FiraGO}[BoldFont=* SemiBold, Numbers=Monospaced]
-	\setsansfont{FiraGO}[BoldFont=* SemiBold, Numbers=Monospaced]
-	\setmathfont{Fira Math}[BoldFont=*-SemiBold]
-  % texttt is not using the correct font
-  
-  \else
-  \setCJKmainfont{Source Han Serif SC}
-  \setCJKsansfont{Source Han Serif SC}
-  \setCJKmonofont{Source Han Serif SC}
-  \RequirePackage[charter]{mathdesign} % math font only for serif mode
+\setCJKmainfont{Source Han Sans SC}
+\setCJKsansfont{Source Han Sans SC}
+\setCJKmonofont{Source Han Sans SC}
+\usepackage[fira]{fontsetup}
+\usepackage{FiraMono}
+
+\else
+\setCJKmainfont{Source Han Serif SC}
+\setCJKsansfont{Source Han Serif SC}
+\setCJKmonofont{Source Han Serif SC}
+\RequirePackage[charter]{mathdesign} % math font only for serif mode
 \fi
 
 % \setCJKmainfont{SourceHanSerifSC-Regular.otf}[BoldFont={SourceHanSerifSC-Bold.otf}, ItalicFont=SourceHanSerifSC-Regular.otf]
@@ -45,7 +41,6 @@
 
 \RequirePackage{graphicx} % essentials
 % \RequirePackage{microtype}
-\RequirePackage{berasans, beramono}
 \RequirePackage{eucal}
 \RequirePackage[nocompress]{cite}       % other convenient stuff
 \RequirePackage{enumerate}