Vertically 0.3–0.5 cun. The needle should be guided along the posterior border of the clavicle.
Caution: Pneumothorax, especially with emphysema; superficial and deep cervical arteries.
According to some authors, this point is contraindicated during pregnancy
Quepen ST-12 is an important point. It is the meeting point of Stomach, Large Intestine, Small Intestine, Triple Burner and Gall Bladder Channels, thus it has a powerful effect on all above Yang Channels.
Furthermore, it removes Obstructions from the Channel so as to ease pain or stiffness from the region around neck, shoulder, upper limbs and supraclavicular fossa.