now thats how you punch

so, i know the punching guy has a bad attitude, but MC is really shitting on hard work. he just got "woke" a few days, maybe a week before, he had to rebuild his dantian from scratch, and his overall level is lower. despite all this, he can withstand a heavy fist fight with someone that's been training since childhood? plot armor level 1000
at least with the sword techniques, they can be carried over with knowledge because his past self was a swordsman, at least, he carried a sword in the prologue.
This fight is about physical strength and colliding power levels, something that MC, thus far, has lacked.
They talked about using the entire body to strike with the first, but i refuse to believe that mr pompous prick, who was trained as a pugilist since childhood, does not know that as well. if he doesn't, they need to fire his dumbass teacher.
Oh, one last bit, 6:15, HORYUUKEN! :-P

they said in the beginning that mc has always been talented with martial arts and also worked hard but he failed to awaken the bloodline, therefore I guess he can fight with the other dude

bro plzz tell me name of anime shown
at last

Xian Feng Jian yu