Shen Lang traveled to the past and became a matrilocal son-in-law of a wealthy family. And yet he was kicked out for being a good-for-nothing. So he swore that he would marry a more powerful and striking noblewoman.
I'm not going to practice martial arts in my whole life! I'll groom my wife to be the No.1 martial master in the world! She will kick the ass of anyone who dares to mess with me!