updata

app.py

@@ -108,7 +108,7 @@ def get_answer(question,session_id,language,prompt,index,top_k,temperature):
     if len(index) > 0:
         url += ('&index='+index)
     else:
-        if language.find("chinese") > 0 and len(chinese_index) >0:
+        if language.find("chinese") >= 0 and len(chinese_index) >0:
             url += ('&index='+chinese_index)
         elif language == "english" and len(english_index) >0:
             url += ('&index='+english_index)