What is the source of the gallbladder?

The source point of the gallbladder meridian is generally referred to as Qiuxu.

In the meridian theory of traditional Chinese medicine, the gallbladder meridian is one of the twelve meridians of the human body, with a total of 44 points. Qiuxu is located at the ankle, specifically at the front and lower part of the lateral malleolus of the foot. When the extensor digitorum tendon is depressed, it has the functions of relaxing tendons, regulating qi, relieving pain, clearing heat and improving eyesight. Qiuxu can treat many diseases along the gallbladder meridian, such as foot inversion, ankle sprain, etc. It also treats various internal heat diseases, such as throat inflammation, sore throat, toothache, redness and inflammation of the eyes, etc.