diff --git a/xiaobai-datahub/datahub/adapters/eastmoney.py b/xiaobai-datahub/datahub/adapters/eastmoney.py
index bb1bffc..81c731d 100644
--- a/xiaobai-datahub/datahub/adapters/eastmoney.py
+++ b/xiaobai-datahub/datahub/adapters/eastmoney.py
@@ -128,13 +128,19 @@ class EastmoneyAdapter(MarketAdapter):
     def fetch_quotes(self, codes: list[str]) -> list[dict[str, Any]]:
         # Eastmoney ulist.np accepts ~60 secids per request; page remaining codes.
         secids = []
+        suffixes: dict[str, str] = {}
         for code in codes:
             ts = str(code or "").upper()
             symbol = ts.split(".")[0]
-            if ts.endswith(".SH") or symbol.startswith(("5", "6", "9")):
+            if ts.endswith(".BJ") or symbol.startswith(("4", "8", "92")):
+                secids.append(f"0.{symbol}")
+                suffixes[symbol] = "BJ"
+            elif ts.endswith(".SH") or symbol.startswith(("5", "6", "9")):
                 secids.append(f"1.{symbol}")
+                suffixes[symbol] = "SH"
             else:
                 secids.append(f"0.{symbol}")
+                suffixes[symbol] = "SZ"
         if not secids:
             return []
         result: list[dict[str, Any]] = []
@@ -154,7 +160,7 @@ class EastmoneyAdapter(MarketAdapter):
                 symbol = str(row.get("f12") or "")
                 if not symbol:
                     continue
-                ts_code = f"{symbol}.SH" if symbol.startswith(("5", "6", "9")) else f"{symbol}.SZ"
+                ts_code = f"{symbol}.{suffixes.get(symbol, 'SZ')}"
                 epoch = int(finite_number(row.get("f124")) or 0)
                 close = round4(finite_number(row.get("f2")))
                 previous = round4(finite_number(row.get("f18")))
@@ -462,10 +468,10 @@ def _normalize_market_quote(row: dict[str, Any]) -> dict[str, Any] | None:
     if close <= 0 or previous_close <= 0:
         return None
     market = int(finite_number(row.get("f13")) or 0)
-    if market == 1 or symbol.startswith(("5", "6", "9")):
-        ts_code = f"{symbol}.SH"
-    elif symbol.startswith(("4", "8")):
+    if market == 0 and symbol.startswith(("4", "8", "92")):
         ts_code = f"{symbol}.BJ"
+    elif market == 1 or symbol.startswith(("5", "6", "9")):
+        ts_code = f"{symbol}.SH"
     else:
         ts_code = f"{symbol}.SZ"
     epoch = int(finite_number(row.get("f124")) or 0)
diff --git a/xiaobai-datahub/datahub/adapters/tencent.py b/xiaobai-datahub/datahub/adapters/tencent.py
index 4981090..04374dc 100644
--- a/xiaobai-datahub/datahub/adapters/tencent.py
+++ b/xiaobai-datahub/datahub/adapters/tencent.py
@@ -158,10 +158,10 @@ def _tencent_symbol(code: str) -> str:
     symbol = raw.split(".")[0]
     if not symbol.isdigit() or len(symbol) != 6:
         return ""
+    if raw.endswith(".BJ") or symbol.startswith(("4", "8", "92")):
+        return f"bj{symbol}"
     if raw.endswith(".SH") or symbol.startswith(("5", "6", "9")):
         return f"sh{symbol}"
-    if raw.endswith(".BJ") or symbol.startswith(("4", "8")):
-        return f"bj{symbol}"
     return f"sz{symbol}"
 
 
diff --git a/xiaobai-datahub/datahub/realtime_serve.py b/xiaobai-datahub/datahub/realtime_serve.py
index b3cfb71..16b6235 100644
--- a/xiaobai-datahub/datahub/realtime_serve.py
+++ b/xiaobai-datahub/datahub/realtime_serve.py
@@ -616,6 +616,8 @@ def _guess_ts_code(code: str) -> str | None:
     if "." in raw:
         return raw
     if len(raw) == 6 and raw.isdigit():
+        if raw.startswith(("4", "8", "92")):
+            return f"{raw}.BJ"
         if raw.startswith(("5", "6", "9")):
             return f"{raw}.SH"
         return f"{raw}.SZ"
diff --git a/xiaobai-datahub/datahub/serving.py b/xiaobai-datahub/datahub/serving.py
index 9114a91..db8f215 100644
--- a/xiaobai-datahub/datahub/serving.py
+++ b/xiaobai-datahub/datahub/serving.py
@@ -192,7 +192,7 @@ class V1API:
         limit, offset = self._page(q)
         today = yyyymmdd(now_shanghai())
         batch_id, snapshot = self.pipeline.published_stock_snapshot(today)
-        if batch_id:
+        if batch_id and snapshot:
             # Formal view: the latest published stock snapshot, with batch
             # metadata. Filters are applied in-memory on the snapshot.
             pub = self.pipeline.latest_stocks_publication(today) or {}
diff --git a/xiaobai-datahub/tests/test_realtime_intraday.py b/xiaobai-datahub/tests/test_realtime_intraday.py
index a7b27cf..3364fb2 100644
--- a/xiaobai-datahub/tests/test_realtime_intraday.py
+++ b/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")