C720 His Fiancée
Zang Mei's forces were basically all in the Cultivation Realm, and most of the people she knew were in the Cultivation Realm. Therefore, leaving the Devil Realm and going to the Cultivation Realm to find someone to help her was the best choice.
Furthermore, judging from the man's attitude, it seemed like he didn't really have the intention to kill Zang Mei. If they acted faster