diff --git a/beamerthemeSimple.sty b/beamerthemeSimple.sty
index 9612291..1e5818a 100644
--- a/beamerthemeSimple.sty
+++ b/beamerthemeSimple.sty
@@ -12,6 +12,8 @@
 \setmathfont{Fira Math}[BoldFont=*-SemiBold]
 \RequirePackage{xeCJK}
 \setCJKmainfont{Source Han Sans SC}
+\setCJKsansfont{Source Han Sans SC}
+\setCJKmonofont{Source Han Sans SC}
 
 \RequirePackage[english]{babel}
 \RequirePackage{fancyhdr}        % header footer
diff --git a/main.pdf b/main.pdf
index 0c98ad7..4268c7b 100644
Binary files a/main.pdf and b/main.pdf differ