Vertically 0.5-1 cun
Yuji LU-10 is an important point for clearing Lung Heat, regardless being Full or Empty-Heat. It is more frequently used for acute cases, which corresponding to the Qi Level of the Four Levels Theory. Another Lung Channel point Chize LU-5 also clears Lung Heat but rather chronic patterns such as Phlegm obstructing the chest.
It is so effective that it can even clear Heart Heat, so that it treats emotional related symptoms such as fear, restlessness, anger, manic behavior or fright.