C998 Inversion of Yin and Yang

Ever since he had obtained the Yin-yang Knife, Chu Xuan had never used it before. It was just because it was used by the Yin-yang Knife and it had too many drawbacks. In the past, Chu Xuan's cultivation was not high enough, so he was simply unable to fully display the maximum power of the Yin-yang Knife.

The most important thing to do was to use the mysterious power on the Yin-yang Knife