One symptom of illness cannot create another symptom of illness.

* 果不能生果。黄梨不能生香蕉。

* A fruit cannot bear another kind of fruit. Pineapple cannot bear a banana. Raspberry cannot bear a strawberry. 

• High blood pressure does not lead to stroke.
• Diabetes does not lead to blindness.
• Bone spur does not lead to pain.
• Gout does not cause pain in big toes.