Zhongji can be translated as 'extreme center'.
It is the Mu point of the Bladder and therefore the place of concentration of the Qi.
It is also the crossing point of the 3 Yin meridians of the foot.
Location of Zhongji
Zhongji is located 1 cun above the pubis (pubic symphysis), i.e. 4 cun below the navel.

Therapeutic functions and clinical indications of Zhongji
- Zhongji treats all Bladder problems : incontinence, urinary retention, cystitis;
Lin Zheng = urinary infection: cloudy, frequent, dark, painful urination, with a stinging sensation, blood, itching.
Long Bi = urinary difficulties: urine passes with difficulty, drop by drop. - It is used for male sexual problems : impotence, spermatorrhea;
- It is also used for gynecological problems.