There is no such thing as a trick to find the Blood Sea Point. The conventional way to find the Blood Sea Point is to sit on a chair, straighten the leg, and a depression will appear on the inside of the knee, with a bulging muscle above the depression, and the top of the muscle is the Blood Sea Point. Blood Sea Point is an acupoint of the Foot Taiyin Spleen Meridian and is an important point for treating blood disorders. It has the effects of activating blood circulation and removing blood stasis (promoting blood circulation and eliminating blood stasis in the body), tonifying and nourishing blood (replenishing and nourishing the blood), and inducing blood to return to the meridian. Blood Sea acupoints are mostly used to treat abdominal disorders such as abdominal pain and distension; gynecological disorders such as irregular menstruation, excessive menstruation, dysmenorrhea, menstrual closure, and metrorrhagia (excessive menstruation or dripping menstruation), and so on. Daily health care can be 2-3 minutes a day to knead both sides of the Sea of Blood points, the force should not be too large, can be felt at the point of soreness and distension can be, in order to gently for the principle. It is recommended that you seek the help of a professional acupuncturist and operate under the guidance of a doctor.