From OSTNT:

Geli Shijie (Segregated World); A virtual reality game where only those who are chosen can play. In order to prevent more players from entering the Segregated World, three hackers of the Hackers Alliance G attempted to steal the Odin Core to destroy the server.

While trying to protect the two goddesses, Xiao Chang Feng was heavily injured, on the verge of life and death, he was then fused with the Core, unleashing the power of the Core, Xiao Chang Feng....