She got what she deserved for cheating. Cheating is offensive to everyone. Its pretty universal in any society (except for America lol).
Here in America, guarantee you especially nowadays where I live in globohomo clown world central, if a foid cheats, the guy finds out and is still willing to forgive her, maybe call off the relationship for a while and get back with her. The libs call it some kinda open relationship kinda thing. No its not. Its cuckery and degeneracy. Which is pretty rampant.
Young American men are so damn desperate and thirsty nowadays, thats what a lot do.
Anyways i digress, back to the video. The chinese dudes are simply maintaining order and enforcing social norms. Without it and the tolerance of degeneracy, society gradually falls apart. The order, stability, trust, and harmony that people want and cherish, are eroded by individuals like that cheating noodlewhore that is seen getting beat in that video.