Yang Zhen's injuries weren't serious. Given his character, it would have been impossible for Lin Tianli to strike him where he should not have been struck. At that moment, all the penetrative injuries on his body were either on thick-skinned areas or on places like the shoulder blade which were capable of 'locking swords', ñareas that were so tough, a sword stuck in them could hardly be pulled out.
Moreover, Yang Zhen's physique at that time was like a ferocious beast. Haven't you heard that a beast can't be killed with just a couple of stab wounds?
Green glows emanated continuously from Yang Zhen's body. His wounds quickly stopped bleeding, leaving onlookers dumbfounded.
"Can this… Is this guy unkillable?"
"Not unkillable, he astonishingly managed to evade the critical areas with every strike. To be able to do so under such circumstances, Yang Zhen truly is horrifyingly formidable."