Vertically or obliquely 1–1.5 cun.
Chengjin BL-56 is not a major point, even thought it has influence over the whole Bladder Channel, especially on the head. Typical manifestations include dizziness, headache, heat in the head, nosebleed and rhinitis.
The name 'Support the Sinew' indicates its ability of removing Obstructions and relaxing Sinews. It is able to treat pain and contraction of muscles and sinews, especially in the lumbar region and calf.
Finally, BL-56 and its neighboring point Chengshan BL-57 are the two major proximal points in treating pain in foot and heel.