It was difficult for spirits and monsters to grow. Otherwise, they wouldn't be hiding in the snow mountains of the North. They were different from demonic beasts. They were the creation of heaven and earth. Although they had a long life, they were not good at cultivation and fighting. Except for a few exceptions, they were no different from ordinary people.
Demonic beasts could reproduce, but demons could only rely on luck. They wanted to cultivate, but they could not understand the way of cultivation. They could only comprehend it by themselves, but it was not easy to break the shackles. Even for the Ice Queen, her strength was only enough to live long enough.
This was also the reason why fairy Chunyu felt that it was a pity. Monsters were favored and shackled by heaven and earth. If they were in other worlds, they might have the opportunity to become Immortals. However, in the Qianyuan world, they would only become resources.