Chinese cabbage is a kind of vegetable originated in East Asia, commonly known as green vegetables, also known as gum vegetables, sauerkraut, sauerkraut, rape (in some parts of Northeast China), oil cabbage and so on. It is a close relative of Chinese cabbage (cabbage), belonging to Brassica, and also close to watercress, belonging to Brassica of Cruciferae. Originally from China, it is distributed all over the north and south, and widely cultivated in China. Chinese cabbage is a cultivated Brassica plant with edible stems and leaves. It is an annual or biennial herb with a height of 25 ~ 70 cm and is often cultivated as an annual.

Food theory

Chinese cabbage, the top-grade fermented grains in other records, is differentiated from fermented grains. The Book of Songs says, "Pick weeds and pick the Philippines." Green vegetables (Chinese cabbage) are "white fermented grains" recorded in the newly revised Materia Medica. Yu, a doctor in Qing Dynasty, said, "White rice and green vegetables are good ways to keep healthy." Wang Mengying also said in his "Fun Diet Spectrum": "Vegetables are Xian Yi, and vegetables are beautiful." There are also folk health proverbs, such as "green vegetables and tofu keep you safe" and "if you don't eat green vegetables for three days, you will make a fire".