[Location] With the lateral wrists towards each other on the palm aspects and the fist slightly clenched, on the back of hand, between the first and the second metacarpal bone, about 1 cun behind Hegu (LI4). ( Fig. 101 )
 
[Regional Anatomy] Skin→subcutaneous tissue→the first dorsal interossei→musculus adductor hallucis. Superficial layer, the distribution of ramus superficialis nervi radialis, the radialis part of dorsal venous rete of hand, the branches or the subordiantial ramus of the first dorsal metacarpal arteries and veins; deep layer, the branch of profundus nervi ulnaris.