章 423: Chapter 167 - Prideful Ambition_5

Cao Zhen, out of curiosity, barely gave it a thought before blurting out, "What method?"

The Grand Preceptor stretched out a hand and made a chopping gesture in the air. He looked at Cao Zhen and spoke in a regained calm tone, "Because I slashed myself with a knife."

To slash oneself with a knife, coming from his mouth, was as calm and ordinary as drinking water or eating a meal.

Cao Zhen was completely unsettled. To slash oneself with a knife naturally meant to cut down one's own cultivation base.

If a person's cultivation base was damaged due to an injury, or even if it was like Yu Tuoyu, the Grand Preceptor's disciple, who blew up his Golden Core and then took a Pill, theoretically, it's possible to slowly recover the damaged cultivation base.

But to cut one's cultivation base, if you sever your own cultivation base, then it is truly gone, and it is very, very difficult to cultivate back.