diff --git a/game/Chapters/Chapter1.rpy b/game/Chapters/Chapter1.rpy
index 49e0745..796b6f6 100755
--- a/game/Chapters/Chapter1.rpy
+++ b/game/Chapters/Chapter1.rpy
@@ -35,7 +35,7 @@ label Chapter1_Scene1:
     show xingyu laughing big
     xingyu "{cps=5}哈哈哈哈哈{cps=15}！\n真是一对苦命鸳鸯！"
 
-    play sound "audio/xiakering.mp3"
+    play sound "audio/AfterClassRing.ogg"
     scene bg black with fade
     pause 1.0
     scene bg playground twilight
diff --git a/game/audio/AfterClassRing.ogg b/game/audio/AfterClassRing.ogg
new file mode 100644
index 0000000..320db21
Binary files /dev/null and b/game/audio/AfterClassRing.ogg differ
diff --git a/game/audio/xiakering.mp3 b/game/audio/xiakering.mp3
deleted file mode 100644
index 091e953..0000000
Binary files a/game/audio/xiakering.mp3 and /dev/null differ