diff --git a/NineChess/src/config.h b/NineChess/src/config.h
index 6ab60102..bd9aeebc 100644
--- a/NineChess/src/config.h
+++ b/NineChess/src/config.h
@@ -9,7 +9,9 @@
 
 #define IDS_SUPPORT
 
-#define HASH_MAP_ENABLE
+//#define HASH_MAP_ENABLE
+
+#define BOOK_LEARNING
 
 //#define DONOT_DELETE_TREE