There is too much knowledge involved in it, how can a warrior in the divine realm understand it?

As far as the background is concerned, in the martial arts world of the entire earth, there is no Zhang Han who knows as much as Zhang Han. He can change the exercises in person and say a few words, which already shows that Zhang Han did not treat them as outsiders.

After all, the younger brother is Emperor Qing, how can he be his elder brother without showing his hands?