For those who doesn't know, this manhua is from a novel called Ultimate Scheming System.
It has all kind of face slapping, acting tough, OP MC.
Totally worth the time to read it.
Uh. Prince-in-laws aren't a thing. Like, not in a single place in the world has that ever been a concept that has existed. If the raws are talking about a fuma, or however it's properly romanized, it's a prince consort.