Puncture perpendicularly 0.3-0.5 inch, or subcutaneously with the tip of the needle directed towards Dicang (ST 4).
1. Perpendicular insertion 0.5 cun.
2. Transverse insertion to join with such points as Dicang ST-4, Daying ST-5, Xiaguan ST-7, etc.
3. Transverse insertion towards the upper or lower jaw for toothache.