C51

This was the Buddhist mantra of the Great Wisp's Heart Sutra, and it was also the password to use magic.

The password sounded. A faint red light seeped out from Zhang Feiheng's hands, illuminating half of his face. After a while, his two hands were like red-hot iron, blazing with a fiery red hue.

Following that, Zhang Fei's cultivation rose bit by bit