What is the definition of ghosts and gods in the Feng Shui culture left over from China's 5,000-year-old culture?

In the traditional culture of China, ghosts and gods are different biological states. Ghosts are phenomena after the death of various creatures, and they have different powers. Wu Cheng'en and The Journey to the West described five kinds of immortals. Heaven and earth ghosts and gods, a few monsters can also become immortals, and their mana is often less than these five kinds of mana. Ghosts and gods are a magical state that all kinds of creatures are born or reached through cultivation. In various legends of China, ghosts and gods can't be touched or seen in real life, but they can communicate with them through prayers and sacrifices.