Mr. Sun's “4th soup” is the result of his study of the combination of diets and nutrition of Western and Central medicine and is the culmination of many decades of vegetarian life in Sun. This soup is referred to by nutritionists as “good food in vegetarian food”. The soup is made of the essence of four vegetarian foods, namely, yellow cabbage, mussels, tofu and bean sprouts. These four diets contain abundant proteins, fats, vitamins and mineral elements, as well as biologically active ingredients such as sugar, dietary fibres, unsaturated fatty acids and antioxidants, which both supplement blood and contribute to the decomposition of cholesterol in blood and are useful for the prevention and treatment of cardiovascular diseases. The antioxidants are one of the best foods for modern humans, as they increase immunity, reduce fatigue and prevent cancer, and the rich dietary fibres can be detoxicated。