C152 The Red Feathered Bat Suicide(part I)

Pang Dun nodded and extended his hand to help Professor Xu up.

But before he could reach down, Professor Xu pushed his hand away, "Pang Dun, what are you doing? Did you forget what I was teaching you all the time? I have emphasized to you since I was young that this kindness should be repaid with water. This time, Master Fang did not treat me as a favor by dripping water