In that era, there were very few people who practiced immortality, so Onmyoji was also a very sacred profession. Onmyojis are generally approachable and righteous, so if evil spirits come to them, they will basically respond to their requests. Taoist priests also have a long way to go. They can catch monsters, ghosts, tell fortunes, read Feng Shui, etc.
Cultivation of immortals: In that era, cultivating immortals could lead to immortality, but why were there so few people? This was because there were not many people who had the destiny to become immortals, and some people were unwilling to cultivate immortals, while some people had evil intentions and were unable to achieve success in learning, and eventually died abnormally.
World: Loose cultivators can only stay in the human world. As long as you reach a certain level of cultivation, you can go to the realm of cultivation. This world is mainly divided into: human world, cultivation world, Buddhist world, demon world, underworld (but still controlled by the fairy world), demon world, and fairy world. There are different races in each world. The most mysterious of the races is the legendary space-time race. They do not belong to any realm. They live in the gaps of time and space and can travel anywhere in any time and space. Each realm has a layer of enchantment to separate the boundaries. Members of each realm can only have certain envoys who can come and go at will, but for the time and space clan, only members of the clan can come and go freely. Ning Qing is just practicing Qi now. The realms are divided into: Qi training, foundation building, golden elixir, Nascent Soul, out-of-body experience, Immortal Envoy (Magic Master), Immortal Saint (Devil Saint), Immortal Lord (Demon Lord), and Shen Zun (Evil Lord).
Kaio: Human World: divided into countries, called Chairman or President. Xiujie: The strong is the king, currently Bai Lu. Buddha Realm: Sakyamuni
Demon Realm: Currently Yan Lianwei. Underworld: Ning Qing. Demon World: Gu Ming goes north. Fairyland: Luyun.