diff --git a/collection/opendb-city-china/collection.json b/collection/opendb-city-china/collection.json
index 00fc190..b2c5741 100644
--- a/collection/opendb-city-china/collection.json
+++ b/collection/opendb-city-china/collection.json
@@ -80,7 +80,7 @@
       "IndexName": "pinyin",
       "MgoKeySchema": {
         "MgoIndexKeys": [{
-          "Name": "name",
+          "Name": "pinyin",
           "Direction": "1"
         }],
         "MgoIsUnique": false