When he was a child, for some reason, there was always a little kid behind Cao Fang who made people laugh and cry, tugging at his elastic back hem. The kid always had an aggrieved look on his face. Probably that's when the bad relationship started. . .
When he grew up, he studied abroad for several years for some reasons. When he came back, he saw the kid's face as if he didn't recognize anyone. The key to the family's house was still in the kid's hand. . .
The same plot unfolded by God happened.