Which of the following is false according to Taichong(LR3)? ()

A．Shu-stream point and yuan-primary point
B．Belongs to Pericardial Meridian of Hand-jueyin
C．On the dorsum side of feet, in the depression between the first and second metatarsal bones
D．often used to treat menstrual disorders, dysmenorrhea, amenorrhea and other gynecological diseases
E．0.5~0.8 cun perpendicular insertion