Bladder July 8, 2020 0 comments BL 39 – WEIYANG Bladder Meridian Acupuncture Point BL 39 – Chinese name: WEIYANG Location Lateral to BL 40 on the medial borer of the tendon of biceps femoris Indications Pain in the backĀ of the knee. Disorders of urination. Urinary withholdings