C296 Lu Chengyu's Regret

Smack!

A vivid red handprint materialized on Lu Chengyu's cheek. Lu Mu's slap had left him utterly dumbfounded.

Clutching his face, Lu Chengyu stared at Lu Mu, incredulous. "Grandpa, why did you hit me?!"

Lu Mu jabbed a finger at Lu Chengyu's forehead, his spittle flecking Lu Chengyu's face. "I did it for your own good!"

"Reflect on your actions! Since becoming chief engineer