He borrowed the power of the Dao of the Underworld and separated good and evil into two realms.
The purely evil body remained in the Mortal Realm, becoming an existence of extreme evil recognized even by Ksitigarbha's True Body; the purely good body was stripped to the Netherworld, completely devoid of cultivation, and should have been devoured by myriad ghosts in no time, unable to return to the Mortal Realm.
The evil body obtained Ksitigarbha's True Body and successfully defeated Xuan Yinzi. Although he did not kill him, he seized his Dao and his sect, which was considered revenge. In fact, if he were willing to take some risks and pursue him, there was still a chance to completely kill Xuan Yinzi. However, the evil body had lost all sense of emotional consideration and only considered pure benefits, never risking anything for anyone.
After severing that crucial part, all he wanted now was to reign supreme over the Mortal Realm, climbing step by step to the very top.
