(1), Dan has dragon water and tiger fire.

2. Neidan's family has different views. Metaphors of Shen Yuan and Yuan Qi. "Chongyang real person awarded Danyang 24 strokes": "Danyang asked again: Who is the dragon and tiger? The founder replied: God is a dragon, anger is a tiger, and it is also life. " Metaphors of Shen Yuan and jing yuan. Shen Yuansheng was born in the heart fluid, and the heart belongs to divination and fire; Yuan Jing was born in kidney qi, and kidney belongs to Bu and water. So there is a saying that "the dragon comes out of the fire" and "the tiger comes out of the water". One refers to the mind. Analysis of doubt refers to metaphysics: "Dragon and tiger live in the heart of the dead."

The home in the room is also used to help men and women. Men are dragons and women are tigers.