diff --git a/q4_3b/zhifang_time.py b/q4_3b/zhifang_time.py
index d38f8e6..846d5cd 100644
--- a/q4_3b/zhifang_time.py
+++ b/q4_3b/zhifang_time.py
@@ -10,7 +10,7 @@ with open('movie.json', 'r', encoding='utf-8') as f:
 
 plt.figure(figsize=(12,8))
 plt.hist( duration,                     # 数据
-         bins=10,                    # 分成几个柱子
+         bins=5,                    # 分成几个柱子
          color='#3498DB',            # 颜色
          edgecolor='white')          # 柱子边框颜色
 plt.title('时长分布', fontsize=14)