Answer: Hello, the green skin has the effect of dredging the liver to break the gas, eliminating the stagnation of the efficacy of the treatment of liver depression and stagnation of Qi and other evidence. Qiancheng grass has the effect of gallbladder and jaundice, diuretic and drenching, detoxification and swelling, and Qiancheng grass has a typical treatment of stones in Chinese medicine, so the two drugs should be used together to ease the liver and jaundice, eliminating the role of stones.