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CV-19 Purple Palace
紫宫 〔紫宮〕 zǐ gōng
Channel: CV, controlling (rèn) vessel
Modern location: An acupoint located on the chest, level with the second intercostal space on the midline.
Classical location: In the depression one cùn and six fēn directly above Jade Hall (CV-18). From
Local anatomy: The perforating branches of the internal mammary artery and vein. The anterior cutaneous branch of the second intercostal nerve.
Action: Loosens the chest and rectifies qì; suppresses cough and disinhibits the throat.
Modern indications: Cough; panting; chest pain.
Classical indications: Fullness and pain in the chest and rib-side; heart vexation; blood ejection; glue-like spittle; inability to get food and drink down of food and drink.
Needle stimulus: Needling: 0.3 cùn downward oblique insertion. Moxa: 5 cones; pole 5‒20 min.
Point name meaning:
The Chinese generally consider yellow to be the imperial color, though the color purple is sometimes also associated with royalty, as in the terms 紫宸 (zǐ chén>), the palace, and 紫禁城 (zǐ jìn chén), the Forbidden City. The abode of the heart, sovereign among viscera, is thus, by analogy, called the Purple Palace.
The phrase 紫宫 (zǐ gōng), Purple Palace, could also be a reference to heaven. In evidence of this, it has been said that: Tài Yǐ (太乙, the Supreme Unity) resides in the Purple Palace
(淮南子：紫宫者，太乙之居也 ). As heaven governs man, the heart governs the body. Hence the residence of the heart is called the Purple Palace.
We can also see purple as the color of blood. The heart, which commands the blood, resides in the Purple Palace. Also of note, Purple Palace is the name of a star that is a part of the Celestial Emperor Constellation. See