The Golden Elixir

① One of the five viscera of the human body in the system of the five agents (wuxing). Main associations: Fire; South; summer; red.

The heart is red and is the daughter. 心赤為女。

② Yang. ↔ shen 腎 kidneys.

The heart is Yang, the kidneys are Yin. 〔陽：〕心。〔陰：〕腎。

③ The residence of Spirit (shen).

The heart stores the Spirit. 心藏神。

When the Spirit is in the heart, it does not leak through the mouth. 神在心而不從口漏。

The Heart is the dwelling of Spirit; if the Heart is luminous, the Spirit is clear; and if the Spirit is clear, one’s Nature (xing) is stable. 心為神舍，心明則神清，神清則性定。

④ The middle Cinnabar Field.

The brain is the upper Field, the heart is the middle Field, the Ocean of Breath is the lower Field. 腦為上田，心為中田，氣海為下田。