Ответ:
The ancient (1.) Chinese medicine is also based on the interplay and balance of yin and yang in the human body, and any (2.) illness results from their imbalance.
The body is divided into yin and yang parts. On the whole, the inside of the body is yang, the body surface is yin; the back is yang and the front is yin; also inside the body, there are yang and yin organs.
The balance of all these parts is maintained by a continuous flow of (3.) vital energy (ch’i), along a system of ‘meridians’ which contain the acupuncture points.
Each organ has a meridian associated with it in such a way that yang meridians belong to yin organs.
Whenever the flow of ch’i between the yin and yang is blocked, illness results, and the illness is cured by (4.) sticking needles into the acupuncture points to stimulate and restore the flow of ch’i.