Vertically 0.3–0.5 cun
Despite that Jinggu BL-64 is the Source-Yuan point of the Bladder Channel, it doesn't really tonify any specific Organs. This attribute is in line with other Source-Yuan point of Yang Channels.
BL-64 is mostly used to subdues Rebellious Qi from the Head, characterized by headaches, dizziness as well as redness of the inner eye canthus. These symptoms can also be the result of Liver Wind Rising caused by Kidney Deficiency.
Furthermore, BL-64 calms the Mind as well, with additional symptoms such as palpitations, insomnia, manic depression and fright.