Mu Bai

Personality
He is known to have competitive attitude, wanna be seen as the best among those who are similar age as him, on the early chapters of manga he felt disdainful towards Mo Fan whom he considered as his rival along with Xu Zhaoting.

Summary
At the calamity of Bo City, he helped Mo Fan and fellow students defeating dark beast monsters of Black Vatican.

He show up when Mo Fan visits Ancient Capital. They seem to have forgotten high school rivalry and work together when the undead of the Ancient Capital sieges the city.

For some reason he doesn't participate in World College Tournament, it is said that he go out venturing a territory of demon creatures seeking for something to improve his cultivation.

He appear after the tournament story arc when Mo Fan set out for Alps Institute in Switzerland and then going on some adventures with Mo Fan.

At some point he got gravely injured and encased in a coffin to be taken away by a Japanese woman who works as a researcher with Undead element.￼ Mo Fan and friends managed to learn a way to wake him up from his comatose-like situation, by finding a gem called Night Amethyst.

Later on, gets revived by his friends using Night Amethyst.

(More to be added?)