Rape, also known as Chinese cabbage, is a bitter vegetable with Latin name of Brassica campestris L. Brassicaceae. Brassicaceae plants are native to China, with dark green stems and yellow flowers. In agronomy, many oil-bearing species in plants are collectively called rape. At present, the main types (varieties) of rape cultivation are: Chinese cabbage rape, mustard rape and cabbage rape.

Mainly distributed in Anhui, Henan and Sichuan. Rape is rich in nutrition, among which vitamin C content is very high. Rape generally grows in a relatively humid climate, such as southern China. Rape also has many uses, for example, rape flowers can be eaten when they are in bud; Rape flowers are also a beautiful scenery when they are in full bloom (Hanzhong City, Shaanxi Province, China has a rape flower viewing tourist area); After flowers wither, rapeseed can be pressed for oil.