The Power of Xin Yun, Chapters 186-187

In the past life, when Xin Yun encountered Lan Ya, it was four years from now. Logically speaking, she should have been much more formidable then than she is now, but in fact, she wasn't even as good as she is currently.

Xin Yun had tried to ask her why, but Lan Ya would always just give a bitter smile and refused to say. When pressed, she merely told Xin Yun that a battle had completely shattered her confidence, making her unable to enter her previous combat state, and so her strength had regressed instead of improved.

Xin Yun used to be unable to understand what kind of attack could damage a person to such an extent, but now she understood. Po Kong's attack was the kind that could drive one to despair, the kind that made one lose all confidence.