handout-mode.patch

diff --git a/preamble.tex b/preamble.tex
index c8fe2f9..e8918ef 100644
--- a/preamble.tex
+++ b/preamble.tex
@@ -15,7 +15,7 @@
 %      PACKAGES AND THEMES
 %----------------------------------------------------------------------------------------

-\documentclass[UTF8,aspectratio=169,12pt]{ctexbeamer}
+\documentclass[UTF8,aspectratio=169,12pt,handout]{ctexbeamer}

 \usepackage{hyperref}
 \hypersetup{