Ji Sheng is a ghost, a resentful ghost.
Unlike other resentful ghosts, Ji Sheng is very picky about food and does not like to absorb human yang energy.
Resentment, hatred, hatred, greed, ignorance, delusion, these negative emotions born in the human heart are Ji Sheng's favorite 'food'.
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Parasitism: Two organisms live together, one benefits and the other suffers, and the latter provides nutrients and a place to live to the former. This relationship is called parasitism.
PS: The protagonist's early soul body is possessed by the villain, and the two souls share one body.
Mainly accepting, slow to warm up, the CP has not been decided yet, the author's three views are not correct, the protagonist Su Potianji does not need the nourishment of ginseng and cock soup.