Tang San was not just an ordinary god, but he had once been a First-Generation God King. At least up to now, he had not discovered any existence at the God King level in this plane, nor was it possible for such an existence to be there; otherwise, this plane would have already ascended to the Divine Realm.
Once he made a breakthrough and the essence of the God King awakened, although he would have to start from Rank 10, it would surely alert the plane master. No plane master would allow an external God King to exist, because once controlled by an external God King, the plane would no longer be the original plane. Therefore, to ascend to the Divine Realm, it needed the birth of a God King level existence from within itself to elevate the plane to the level of the divine world.