"Hm?"
Qin Fang was momentarily baffled, finding it quite strange that Zack suddenly showed such intense hostility towards him, and he also became slightly more vigilant.
In terms of strength, Zack was naturally more than a notch weaker than Qin Fang.
However, since Zack could emerge alive from the Black Fist Arena, he definitely had means to preserve his life and kill enemies, he just hadn't used them when facing Qin Fang.
Perhaps, in Zack's view, the money paid by Brother San Shui was not worth risking his life for, so naturally, there was no need for him to do so.
After all, Qin Fang was stronger than him; even if Zack wanted to fight to the death and use his ultimate moves, he might not stand much chance of winning... Faced with such a situation, Zack obviously wouldn't take the risk with his own life.
But regardless, Zack had not shown such intense hostility before, otherwise Qin Fang would not have been so measured in his actions, only causing Zack some minor injuries.