C711 The true gates of hell

On the Theory of Huangdi Susu, Qi through the Heavens, Yin and Pingyang, Spirit through the Dark, Yin and Yang, Yin and Yang, Yin and Yang separated, essence and energy gone, The New Book of Lifespan and Old Age; The New Book of Lifespan: People grow from Qi, Qi from the Spirit, All Qi is nourished from the Spirit, It can be found in the Dao