On the contrary, if I don't kill him, Cui Yuan might become a decent ally.
Being able to thrust a broken sword to release sword energy, Cui Yuan is clearly capable of wielding evil qi-infused weapons—judging by Cui Yuan's mental state, this swordsman has probably already contemplated why he should live and why he should kill.
Although Du Chengfeng always feels there's something subtle about this, he can't deny that the thinking of mentally ill people is always more direct than his own peaceful mindset, making them more adept at wielding evil qi-infused weapons.
Yet Cui Yuan has reached this level, and therefore indeed qualifies as a potential ally. As the saying goes, "One person's plan is short, two people's plan is long." If we take Cui Yuan with us to strike those grassland barbarians, the effect will surely be twice the result with half the effort.
