Cheng Zongyang conferred titles upon all of them and imparted Cultivation Techniques, sending them out to develop their own species.
As for Gangzi, there was no need for that. Their species were completely different.
Afterward, he selected many more creatures to confer titles upon, such as the Wilderness Ox, tigers, leopards, wolves, deer, and sheep. He even included some plants and other flora. This was done to further increase the number of Demon Race species.
As for the rivers, lakes, marshes, and mountains scattered among the landscapes, they were not needed at the moment, nor could they reproduce and multiply. Moreover, the Immortal Realm currently only had Cultivators and virtually no ordinary mortals. They didn't need the protection of a Mountain God and Water God. The only thing capable of offering protection was the Ring Spirit's Divine Statue.
