Why Do I Keep Losing Strength Despite Being Invincible?

Shen Yi: Are you saying that my calculations are inaccurate? I am the best divination in the world. I am not worthy of my reputation! The leader of the xx sect: That's not allowed! Do you think our xx sect is doing well there? Shen Yi snapped his fingers, and the xx sect was wiped out. Shen Yi: It's right this time! The leader of xx sect:......! I am invincible, so arrogant!