diff --git a/examples/get_xshg.py b/examples/get_xshg.py
index a343aca..7652b3d 100755
--- a/examples/get_xshg.py
+++ b/examples/get_xshg.py
@@ -11,7 +11,11 @@
 )
 
 tickers_list = {
-    '603288', '600519', '688041',
+    '603288',   # Fosha Haitian
+    '600519',   # Kweichow Moutai
+    '688041',   # Hygon
+    '688047',   # Loongson
+
 }
 
 for ticker in sorted(tickers_list):
diff --git a/msfinance/stocks.py b/msfinance/stocks.py
index ed2d969..0038a3e 100644
--- a/msfinance/stocks.py
+++ b/msfinance/stocks.py
@@ -129,7 +129,7 @@ def _check_database(self, unique_id):
         '''
         if self.db:
             try:
-                query = f"SELECT * FROM {unique_id}"
+                query = f"SELECT * FROM '{unique_id}'"
                 df = pd.read_sql_query(query, self.db)
                 return df
             except pd.errors.DatabaseError as e: