Up to 1 cun vertically or obliquely in a superior direction.
When used for epilepsy, it should be needled obliquely upwards, in order to gain the needling sensation to travel upwards as far as possible.
Yaoshu DU-2 is widely used to distinguish Interior Wind so as to treat related symptoms such as spasms or convulsions. It is one of the most used points for epilepsy.
On top of that, it is also applied to treat chronic lower back pain or stiffness as well as sacrum pain due to Kidney Yang Deficiency.