diff --git a/kmplayer.md b/kmplayer.md
index 4b8bdcc..7c5ffa7 100644
--- a/kmplayer.md
+++ b/kmplayer.md
@@ -1,8 +1,16 @@
-
-
 Additional command line arguments:
 -subcp UTF-8 -subfont-text-scale 3
 
+-subcp GBK -subfont-text-scale 3
+
+
 for chinese
 
--subcp GBK -subfont-text-scale 3
+# in bash
+export LC_ALL=zh_CN.UTF-8
+export LANG=zh_CN.UTF-8
+
+en_US.UTF-8  # default
+en_HK.UTF-8  # default
+
+NOTE: install "language support" before