Because one of the main ingredients of Shandanqing is Kojen. Shandanqing, also known as "Ke Yan Shandanqing", is a kind of traditional Chinese medicine tablets. The reason why it is called "Ke Yan" is because one of the main ingredients of Xiang Dan Qing is Ke Qing Su, and the word "Yan" indicates beauty and elegance, so "Ke Qing Su" and Therefore, "Ke Qing Su" and "Yan" are combined together to form the name "Ke Yan". It is widely used in the treatment of liver and gallbladder diseases, digestive system diseases and immune system diseases, etc. It has good efficacy and clinical application value.