Why did Qi Tiezui commit suicide?

It is said that suicide is just a cover, and Qi Tiezui is a divine operator, so he has already made plans for his future. After the fall of the Old Nine Gates, Qi Tiezui, the Eighth Master, disappeared. Some people speculated that he might have escaped in this way.

Qi Tiezui in Old Nine Gates is a strange man. Nothing seems to get his attention. It gives people the impression that God is saying something unreliable, but what is hidden in this illusion is a strange man who knows astronomy above and geography below. See things will say half sentence, hide half sentence, but is the half sentence he said, others will also take money to buy. Qi Tiezui is incompetent. He is famous for his mouth and fortune telling. He makes good use of all kinds of props and gadgets, which can often come in handy in times of crisis.