Heroes of Troubled Times in the Western Jin Dynasty

Xie Xin was time-traveled, and what came over was Wang Minghan, who was more than two thousand years later. The tragedy is that Wang Minghan only traveled half of the time, and Xie Xin's soul is still there, so Wang Minghan can only quarrel with him in the same body. What makes Xie Xin happy is that every time they quarrel, Wang Minghan will apologize to him and admit his mistakes. But why do he have to raise two middle fingers at himself every time when he apologizes? Is this the etiquette of future generations? What can Xie Xin do? Of course she chooses to forgive her...