diff --git a/docs-2.0/3.ngql-guide/7.general-query-statements/5.lookup.md b/docs-2.0/3.ngql-guide/7.general-query-statements/5.lookup.md
index 97870dc2a00..41ede582c9b 100644
--- a/docs-2.0/3.ngql-guide/7.general-query-statements/5.lookup.md
+++ b/docs-2.0/3.ngql-guide/7.general-query-statements/5.lookup.md
@@ -69,7 +69,7 @@ nebula> LOOKUP ON player WHERE player.name == "Tony Parker";
 | 101      |
 ------------
 
-//Use regex to retrieve vertices.
+# The following example uses regex to retrieve vertices.
 nebula> LOOKUP ON player WHERE player.name =~ "^.{15,20}$" \
         YIELD player.name, player.age;
 +-------------+----------------------+------------+