As a result, some of the texts survived only in Japan, and most scholars had no idea that such a different concept of sex existed in early China.
The fluid believed to contain the most Jing is semen.
Therefore, Taoists believe in decreasing the frequency of, or totally avoiding, ejaculation in order to conserve life essence.
Many Taoist practitioners link the loss of ejaculatory fluids to the loss of vital life force: where excessive fluid loss results in premature aging, disease, and general fatigue.
Taoist sexual practices (Simplified Chinese: 房中术, Traditional Chinese: 房中術, pinyin: fángzhōngshù), literally "the bedroom arts", are the ways Taoists may practice sexual activity.
These practices are also known as "Joining Energy" or "The Joining of the Essences".