diff --git a/tradingagents/dataflows/y_finance.py b/tradingagents/dataflows/y_finance.py
index 8b4b93f5..8f9bfe71 100644
--- a/tradingagents/dataflows/y_finance.py
+++ b/tradingagents/dataflows/y_finance.py
@@ -1,6 +1,7 @@
 from typing import Annotated
 from datetime import datetime
 from dateutil.relativedelta import relativedelta
+import pandas as pd
 import yfinance as yf
 import os
 from .stockstats_utils import StockstatsUtils, _clean_dataframe, yf_retry, load_ohlcv, filter_financials_by_date
diff --git a/tradingagents/graph/trading_graph.py b/tradingagents/graph/trading_graph.py
index c8cd7492..268ee1a1 100644
--- a/tradingagents/graph/trading_graph.py
+++ b/tradingagents/graph/trading_graph.py
@@ -267,7 +267,7 @@ class TradingAgentsGraph:
             "w",
             encoding="utf-8",
         ) as f:
-            json.dump(self.log_states_dict, f, indent=4)
+            json.dump(self.log_states_dict, f, indent=4, ensure_ascii=False)
 
     def reflect_and_remember(self, returns_losses):
         """Reflect on decisions and update memory based on returns."""