C307 Teaching Achievements

"Young man, there is no need to be so angry. In front of us old fellows, I advise you to restrain yourself!" Zheng Guofeng also said with an unfriendly expression, "Otherwise, when you really fall down, I'm afraid you will never have the chance to regret it!"

Ye Hong lightly glanced at him: "You also know that you are old people? [You are all old