diff --git a/README.md b/README.md
index 2acb70b..b41b523 100644
--- a/README.md
+++ b/README.md
@@ -1 +1 @@
-<img width=100% alt="main" src="https://github.com/user-attachments/assets/41884c36-cfcc-4ea0-a921-9a751766f156" />
+<img width=100% alt="example-sans" src="main.png" />
diff --git a/main.png b/main.png
new file mode 100644
index 0000000..4cd0ac4
Binary files /dev/null and b/main.png differ
diff --git a/main.tex b/main.tex
index 455f43d..564f70e 100644
--- a/main.tex
+++ b/main.tex
@@ -2,21 +2,19 @@
 
 \usepackage[sans]{myctex}
 \usepackage{algo}
+\usepackage{metalogo}
 
-
-\title{思源黑体 + FiraGO}
+\title{Template for \XeLaTeX }
 \author{丛宇}
 \date{\today}
 
 \usepackage{bm}
 \begin{document}
 \maketitle
-\begin{center}
-{\Large{\bfseries Test of the font {\scshape Fira Math}.}}\bigskip\\
-{\Large\verb|\usepackage[fira]{fontsetup}|}
-%\medskip\\
-%{\verb|\usepackage[romanfamily=bright-osf]{lucimatx}|} if you want old-style figures (like this: \oldstylenums{1695})\\
-\end{center}
+\begin{algo}
+sans $\to$ lato + 思源黑体\\
+serif $\to$ charter + 思源宋体
+\end{algo}
 
 The default math mode font is $Math\ Italic$. This should not be
 confused with ordinary \emph{Text Italic} -- notice the different spacing\,!
diff --git a/myctex.sty b/myctex.sty
index 85a7153..83660b6 100644
--- a/myctex.sty
+++ b/myctex.sty
@@ -12,15 +12,17 @@
 
 % Now use the conditional
 \ifmyctex@sans
-\setCJKmainfont{Source Han Sans SC}
+\setCJKmainfont{Source Han Sans SC}[BoldFont=*, ItalicFont=*]
 \setCJKsansfont{Source Han Sans SC}
 \setCJKmonofont{Source Han Sans SC}
-\RequirePackage[fira]{fontsetup}
-\RequirePackage{FiraMono}
-\setmathfont{Fira Math}[range=\setminus]
+% \RequirePackage[fira]{fontsetup}
+% \RequirePackage{FiraMono}
+% \setmathfont{Fira Math}[range=\setminus]
+\usepackage[default]{lato}
+\usepackage{lete-sans-math}
 
 \else
-\setCJKmainfont{Source Han Serif SC}
+\setCJKmainfont{Source Han Serif SC}[BoldFont=*, ItalicFont=*]
 \setCJKsansfont{Source Han Serif SC}
 \setCJKmonofont{Source Han Serif SC}
 \RequirePackage[charter]{mathdesign} % math font only for serif mode
@@ -29,7 +31,7 @@
 % \setCJKmainfont{SourceHanSerifSC-Regular.otf}[BoldFont={SourceHanSerifSC-Bold.otf}, ItalicFont=SourceHanSerifSC-Regular.otf]
 
 \RequirePackage[margin=1in]{geometry}
-\RequirePackage{latexsym,amsmath}
+\RequirePackage{amsmath}
 \RequirePackage[dvipsnames]{xcolor}
 
 \RequirePackage[colorlinks=true,urlcolor=Blue,citecolor=Green,linkcolor=BrickRed,unicode]{hyperref}