diff --git a/tools.py b/tools.py
index 0044d04..a195269 100644
--- a/tools.py
+++ b/tools.py
@@ -1,6 +1,5 @@
 # -*-utf8-*-
 import numpy as np
-import jieba
 import json
 import math
 
@@ -23,7 +22,6 @@ def cal_angle(prov:str, city:str, angle_config:dict):
     prov_values = angle_config.get(prov)
     if not prov_values:
         return False
-    city = [x for x in jieba.lcut(city, cut_all=True)]
     city_values = prov_values.get(city)
     if not prov_values:
         values = np.mean(list(prov_values.values), axis=0)