That's a xi / emergency point on a yin meridian, hemostatic point, which stops bleeding.
Location of Diji
Diji is located 3 cun below Yinlingquan.

Therapeutic functions and Clinical indications
Very important point as Zusanli
- Big point in gynecology for bleeding problems;
- Acute pathologies in gynecology whatever they are, dysmenorrhea to calm the pain.