diff --git a/pages/api/search.ts b/pages/api/search.ts
index d140f6c..0edae83 100644
--- a/pages/api/search.ts
+++ b/pages/api/search.ts
@@ -12,7 +12,10 @@ import siteConfig from '../../config/site.config'
  * @returns Sanitised query string which replaces non-alphanumeric characters with ' '
  */
 function sanitiseQuery(query: string): string {
-  const sanitisedQuery = query.replace(/[^a-zA-Z0-9]/g, ' ')
+/**  const sanitisedQuery = query.replace(/[^a-zA-Z0-9]/g, ' ')
+ * Actually this will cause problems with CJK only query words as it will remove every character.
+ * After removing it, CJK search will be much improved.
+ */
   return encodeURIComponent(sanitisedQuery)
 }