Ever since he stepped into the cultivation world, Wen Leyang had heard of the words 'spirit possession' many times now. He had a fantasy-like understanding of 'spirit possession'– that his soul was a 'little person' who spent his days sitting in his brain, controlling every action and thought, and one day an even stronger 'little being' came from the outside, and kicked away the initial 'little being', taking its place...
This understanding was not considered incorrect; it was true for the ordinary cultivators - that 'little being sitting in their brains', was precisely the cultivator's primordial spirit or primordial soul.
Cultivators could never cultivate into heaven's path by merely feeding on uncooked five grains and coarse cereal. That was why they attempted to absorb the energy scattered in between heaven and the earth.