What is the correct method for needling LR-13 (zhang men)?

The correct method for needling LR-13 (Zhang Men) involves a perpendicular insertion of 0.5-0.8 cun. This point is located on the lateral side of the abdomen, on the lower border of the 11th rib, which makes a shorter perpendicular insertion appropriate to avoid deeper penetration into the abdominal cavity. A depth of 0.5-0.8 cun is sufficient to stimulate the point effectively while minimizing the risk of injury to underlying structures, such as the abdominal organs.

When needling this point, it is important to consider the anatomy in the area and the typical sensitivity of the patient. The range of 0.5-0.8 cun allows for adequate stimulation of the point, which is effective for treating conditions related to the liver and spleen, without risk of causing pain or damage.

A deeper or oblique insertion could lead to a higher risk of complications, which is why the choice of perpendicular at a shallower depth is the most suitable method for LR-13.