Initial vertical insertion 0.2 cun in order to penetrate the skin, then direct the tip of the needle inferiorly and continue to insert the needle parallel to the posterior aspect of the sternum up to 0.5–1 cun.
Caution: Dangerous point and should only be needled by experienced practitioners. Wrong insertion technique (for example, vertical or oblique retrosternal needling) may injure the big Vessels and Organs inside the mediastinum.
Tiantu REN-22 is often used to treat both chronic and acute cough and asthma due to its ability to descend Rebellious Lung Qi.
It is also widely used to treat various throat and voice related symptoms such as throat dryness, swelling and ulcers as well as loss of voice.