diff --git a/legals.md b/legals.md
index a6439432..6823614f 100644
--- a/legals.md
+++ b/legals.md
@@ -44,8 +44,8 @@ N3TWORK is a registered trademark of N3TWORK Inc. © 2021 N3TWORK Inc.
 
 GoldWave is a registered trademark of GoldWave, Inc.
 
-Linux is a registered trademark of Linus Torvalds. 
+Linux is a registered trademark of Linus Torvalds.
 
 Touhou Project © Team Shanghai Alice 2002-2021.
 
-All other trademarks, logos, and copyrights are the properties of their respective owners. 
+All other trademarks, logos, and copyrights are the properties of their respective owners.
diff --git a/parts/language/manual_en.txt b/parts/language/manual_en.txt
index 82e52d5b..6a9a8c7a 100644
--- a/parts/language/manual_en.txt
+++ b/parts/language/manual_en.txt
@@ -7,7 +7,7 @@ Gameplay:
         Play until the end or achieve the level's goal to win.
 
 Rotation system:
-        Uses Techmino's custom rotation system. Too lazy to write the details
+        Uses TRS (Techmino Rotation System) by default. The game allows players to choose other commonly used rotation systems (generally unnecessary)
 
 Spin detection:
         Satisfies "3 corner" rule +2 points
@@ -87,4 +87,4 @@ Custom mode:
                 empty cells can be in any state;
                 regular colored cells have to be made of the corresponding block;
                 garbage-colored cells can be any block but not air.
-    Once you make the shape, you will win.
+        Once you make the shape, you will win.
diff --git a/parts/language/manual_zh.txt b/parts/language/manual_zh.txt
index 61260213..7eab09cc 100644
--- a/parts/language/manual_zh.txt
+++ b/parts/language/manual_zh.txt
@@ -5,7 +5,7 @@
         尝试存活更久,或者完成目标即胜利.
 
 旋转系统:
-        使用Techmino专属旋转系统,具体太复杂并且随时可能更改所以不写在这里,可以去parts/kicklist.lua看
+        默认使用Techmino专属旋转系统TRS,允许玩家自选其他较常用的旋转系统(一般不必要)
 
 spin判定:
         满足三角判定+2分
diff --git a/parts/updateLog.lua b/parts/updateLog.lua
index 5c0cba67..e7be508a 100644
--- a/parts/updateLog.lua
+++ b/parts/updateLog.lua
@@ -23,6 +23,7 @@ return[=[
                 堆积模式添加15帧的窒息延迟 #465
         代码:
                 bgm模块可限制最大加载数，不容易达到上限导致没声 #447
+                语音模块支持设置轻微随机音调偏移半径(游戏内固定使用1)
         修复:
                 机翻语言超级消除无行数显示 #462
                 竞速-效率左侧信息颜色问题