fix(HEL-356): support Beijing exchange realtime quotes

Co-authored-by: multica-agent <github@multica.ai>

xiaobai-datahub/tests/test_realtime_intraday.py

@@ -6,7 +6,8 @@ from pathlib import Path
 from unittest.mock import patch
 
 from datahub.adapters.base import AdapterError
-from datahub.adapters.eastmoney import HIS_TRENDS_URL, TRENDS_URL, EastmoneyAdapter
+from datahub.adapters.eastmoney import HIS_TRENDS_URL, TRENDS_URL, EastmoneyAdapter, _normalize_market_quote
+from datahub.adapters.tencent import _tencent_symbol
 from datahub.db import HubDB
 from datahub.realtime_serve import fetch_intraday
 from datahub.serving import ApiError, V1API
@@ -47,6 +48,15 @@ class EastmoneyIntradayLookbackTests(unittest.TestCase):
         self.assertEqual([point["time"] for point in payload["points"]], ["09:30", "15:00"])
         self.assertEqual(payload["points"][0]["close"], 55.9)
 
+    def test_beijing_exchange_920_codes_keep_their_market(self):
+        self.assertEqual(_tencent_symbol("920703.BJ"), "bj920703")
+        self.assertEqual(_tencent_symbol("920703"), "bj920703")
+        quote = _normalize_market_quote({
+            "f12": "920703", "f13": 0, "f2": 18.2, "f18": 18.0,
+            "f3": 1.1, "f5": 0, "f6": 0,
+        })
+        self.assertEqual(quote["ts_code"], "920703.BJ")
+
     def test_preferred_date_keeps_that_session(self):
         adapter = FakeEastmoney()
         payload = adapter.fetch_intraday("601318.SH", "20260907")