I dont see the problem here. An experienced Southern Shaolin Boxing practitioner knows how to manipulate their Ki so that it attacks vulnerable organs no matter which part of the body they hit.
If we could see the fight in thermal vision we would see the golden Ki of Zhilei enter through the shoulder and travel up into his opponent's brain.
Scary stuff guys.
This technique attacks the immune system
Disguised like a lie paralyzing the victim
You scream, as it enters your bloodstream
Erupts your brain from the pain these thoughts contain
Moving on a nikka with the speed of a centipede
And injure any motherfukking contender!