diff --git a/.latexmkrc b/.latexmkrc
index 8e48999..f6f5866 100644
--- a/.latexmkrc
+++ b/.latexmkrc
@@ -1,2 +1,2 @@
-$xelatex = 'xelatex -interaction=nonstopmode -synctex=1 %O %S';
-$pdf_mode = 5;
\ No newline at end of file
+$pdflatex = 'xelatex -interaction=nonstopmode -synctex=1';
+$pdf_mode = 1;
\ No newline at end of file
diff --git a/main.tex b/main.tex
index 48ddb2c..7c31548 100644
--- a/main.tex
+++ b/main.tex
@@ -6,8 +6,12 @@
 \institute{A\&L Group, UESTC}
 \begin{document}
 \maketitle
-\section{First Section}
+\section{Connectivity interdiction}
 \begin{frame}{First Frame}
 Hello, world!
 \end{frame}
+\section{Computing cogirth in perturbed graphic matroids}
+\begin{frame}{Perturbed graphic matroids}
+    some backgrounds
+\end{frame}
 \end{document}
\ No newline at end of file