The Scum Is Picky 

In Xinfaxian Sect, Fan Wen felt like he had been shot, because Fei Yinzi's words indirectly meant that Fan Wen looked like a father since he was called by Cheng Sheng 'shifu'.

Cheng Sheng felt relieved. "Er zi. You are good with your words. As expected of my disciple." he said and fondly patted Fei Yinzi's head but with more force. 

Fei Yinzi felt his skull was about to break and cave in. "..." crap. Shizun knows I am fooling him. He thought as his face was covered in dark lines.

Cheng Sheng's brows raised as he evilly chuckled. You sly child. Do you think you can outsmart a scum like me? You're a million years early for this fox! He thought. "I'll let you off for today since I found you have learned," he told him as he let him go.