The practice is known in Chinese as
shǎoyīn tóngqǐn (), a reference to a specific meridian of qi in
traditional Chinese medicine.
China In the 16th century Chinese medical book
Bencao Gangmu by
Li Shizhen, it records that "For old man, or humans who lack the energy, sleep with a girl who is before 14, as there is no better medicine than receiving the qi that is present in a young girl", however it advises not to do any sexual acts and just sleep when performing the practice, as it would have a reverse effect if you do. The book also notes the relatively new variant during the time called "contact for supplementation", which lets the girl send the
qi to enter the nose orifices, navel, and essence(sperm) gate, so as to reach their
cinnabar fields. It also advises to perform it during the nighttime instead of daytime.
Su Nü Jing states how sleeping with a virgin would make diseases disappear.
Korea The young girl used for the practice was called "witbangagi" () and was typically of slave origin or from a poor economic background, often employed by the
Yangban class. The practice continued until the early 20th century. ==See also==