diff --git a/8-Reinforcement/2-Gym/translations/README.zh-cn.md b/8-Reinforcement/2-Gym/translations/README.zh-cn.md
index 9ff984d6..f36a53bb 100644
--- a/8-Reinforcement/2-Gym/translations/README.zh-cn.md
+++ b/8-Reinforcement/2-Gym/translations/README.zh-cn.md
@@ -224,7 +224,7 @@ import random
 
     ```python
     def probs(v,eps=1e-4):
-        v = vv.min()+eps
+        v = v.min()+eps
         v = v/v.sum()
         return v