diff --git a/README_CN.md b/README_CN.md
new file mode 100644
index 0000000..e69de29
diff --git a/elevator_saga/client/base_controller.py b/elevator_saga/client/base_controller.py
index 242509f..1ae4c22 100644
--- a/elevator_saga/client/base_controller.py
+++ b/elevator_saga/client/base_controller.py
@@ -34,7 +34,7 @@ class ElevatorController(ABC):
         self.debug = debug
         self.elevators: List[Any] = []
         self.floors: List[Any] = []
-        self.current_tick = 0
+        self.current_tick = -2
         self.is_running = False
         self.current_traffic_max_tick: Optional[int] = None
 
@@ -173,7 +173,7 @@ class ElevatorController(ABC):
         """内部初始化方法"""
         self.elevators = elevators
         self.floors = floors
-        self.current_tick = 0
+        self.current_tick = -2
 
         # 调用用户的初始化方法
         self.on_init(elevators, floors)
diff --git a/elevator_saga/server/simulator.py b/elevator_saga/server/simulator.py
index 2ac514a..51b05a3 100644
--- a/elevator_saga/server/simulator.py
+++ b/elevator_saga/server/simulator.py
@@ -186,7 +186,7 @@ class ElevatorSimulation:
         traffic_file = self.traffic_files[self.current_traffic_index]
         server_debug_log(f"Loading traffic from {traffic_file.name}")
         try:
-            with open(traffic_file, "r") as f:
+            with open(traffic_file, "r", encoding="utf-8")as f:
                 file_data = json.load(f)
             building_config = file_data["building"]
             server_debug_log(f"Building config: {building_config}")
diff --git a/setup.py b/setup.py
index cbd979b..43ee6f4 100644
--- a/setup.py
+++ b/setup.py
@@ -36,7 +36,8 @@ setup(
         "numpy>=1.20.0",
         "matplotlib>=3.5.0",
         "seaborn>=0.11.0",
-        "pandas>=1.3.0",
+        "pandas>=1.3.0",,
+        "flask
     ],
     extras_require={
         "dev": [