The second category is mainly composed of animal foods, such as meat, eggs, milk, fish and so on. To provide high quality protein, fat, minerals, vitamins A and B. 。
The third category is mainly beans, such as soybeans and their products, to supply high-quality protein, fat, minerals, dietary fiber and B vitamins.
The fourth category is mainly vegetables and fruits, which supply vitamins, minerals and dietary fiber. The fifth category is edible oil and sugar. Edible oil should be mainly vegetable oil to provide heat energy and essential fatty acids.