0.5–1 cun transversely.
Houding DU-19 is mostly used in severe anxiety situation due to its strong calming effect on the Mind. Therefor, it is also able to ease manic behavior, mental restlessness and insomnia.
On the other hand, it also expels Interior Wind so as to eliminate stiffness and pain on the neck. Other typical symptoms include head, headache, dizziness and aversion to cold.