The portion above the diaphragm is known as the upper warmer
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Housing the heart and the lung
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Controls respiration, and activates the flow of vital energy, blood and body fluid
(referring to in fact, the functions of the heart and lung, i.e., it disperses pectoral
qi accumulated in the chest to all parts of the body just as fog and dew moisten
the earth. This is why "The upper warmer is like a sprinkler for distributing nutrients
and qi."
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The portion between the diaphragm and umbilicus is known as the middle warmer
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Houses the spleen and the stomach
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The middle warmer functions in transportation and transformation (referring to in
fact, the functions of the spleen and stomach), i.e. it ferments water and food
and transports and transforms food essence in order to produce vital energy and
blood. Therefore, it is likened to fermentation, where food is digested.
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The portion below the umbilicus is known as the lower warmer
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Houses the liver, the kidney, the urinary bladder, the intestines and the uterus
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The lower warmer separates clear fluid from turbid fluid and discharges urine and
stool, (referring to, in fact, the functions of the kidney, the small intestine,
the large intestine and the urinary bladder).
These two physiological functions mentioned above are characterized by excreting
wastes downwards and outwards.
It is said that the lower warmer works like gutters, to filter and drain off waste
and superfluous water.
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