“Bai” means white; and “huan” means a ring made of jade or gold referring to something valuable or important. The place where the sperm or vital energy is stored is called white ring. Besides, the point is mainly indicated in profuse leukorrhea and seminal emission. Both leukorrhea and sperm are white in colour, hence the name Baihuanshu (White Ring Point).
At the level of the 4th posterior sacral foramen, 1.5 cun lateral to the posterior midline.
Lower back pain.