Vertically or obliquely 0.5–1 cun.
Zhishi BL-52 is at the same level as Shenshu BL-23, which is the Back-Transporting-Shu point of the Kidneys. Therefore it shares many functions as BL-23 and strengthens the effect when the two points are used together.
Most importantly, it tonifies the Kidneys and nourishes the Essence, which is stored in the Kidneys. In fact, its other name 'Jinggong' is literally translated as the palace of the Essence.
In case of Kidney Qi or Yang Deficiency, male patients tend to have sexual problems such as impotence, lack of sexual desire and premature ejaculation. While female patients are prone to infertility. Other typical manifestations include exhaustion, dizziness, tinnitus, backache or nocturnal emissions.
Secondly, BL-52 treats chronic lower back pain and sciatica by tonifying the Kidneys.
Thirdly, by tonifying the Kidney Qi, it regulates urination. It is indicated for dribbling or difficult urination as well as Oedema.
Finally, it is said to be effective in lifting Will-Power when the patients are under depression and lacking motivation. For this purpose, it is often used together with Shenshu BL-23 with Reducing Needling method.