Cupping therapy, also known as the horn method in ancient texts. This is because ancient Chinese physicians used animal horns as suction tools. In the silk texts unearthed from the Han tomb at Mawangdui in Changsha, Hunan in 1973, specifically in the Wushi'er Bingfang, there are already descriptions of using the horn method to treat diseases: "For hemorrhoids located beside the anus, large as a date or small as a kernel, use a small horn to suction, as if cooking two dou of rice, then remove the horn." The phrase "use a small horn to suction" refers to using a small animal horn for cupping. According to experts in medical history literature, Wushi'er Bingfang is the oldest extant medical book in China, believed to have been compiled during the Spring and Autumn and Warring States periods. This indicates that Chinese physicians were using cupping as a treatment method at least as early as the 6th to 2nd centuries BCE.