Heaven and Earth Send Spirits Down

What is "spirit"? Are you talking about these little guys who look like Pokémon? Can you still possess a body? This looks kind of cool. Guan Xiaodi mysteriously traveled to a fantasy world. However, after several years of wandering in the mainland, he gradually discovered that his time traveling was not accidental, but had been planned for a long time. Why him? Why do the most powerful "spirits" like to follow him? Everything is slowly being answered in this fantasy continent. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.