diff --git a/zero-framework.el b/zero-framework.el
index 80471f4a5a858100589841a978943ebc8c376a67..7ffc748395d1c61a045afebcc15d87a80892bce5 100644
--- a/zero-framework.el
+++ b/zero-framework.el
@@ -254,6 +254,7 @@ return ch's Chinese punctuation if ch is converted. return nil otherwise"
     (?? "？")
     (?! "！")
     (?\\ "、")
+    (?: "：")
     (otherwise nil)))
 
 (defun zero-convert-punctuation-full (ch)
@@ -273,6 +274,7 @@ return ch's Chinese punctuation if ch is converted. return nil otherwise"
     (?\' (setq zero-single-quote-flag (not zero-single-quote-flag))
 	 (if zero-single-quote-flag "‘" "’"))
     (?~ "～")
+    (?\; "；")
     (t (zero-convert-punctuation-basic ch))))
 
 (defun zero-convert-punctuation (ch)