Spring vegetables in Chaoshan dialect refer to mustard. Mustard is a common vegetable variety in China, but it is rarely cultivated in Europe and America, and its birthplace is also in Asia. Mustard leaves can be pickled and eaten; Seeds and whole grass can be used as medicine, which has the functions of resolving phlegm, relieving asthma, reducing swelling and relieving pain; At the same time, seeds can also be ground into powder, called mustard, which is a common condiment; Oil extracted from seeds is also called mustard oil.

Mustard is mainly distributed in the provinces south of the Yangtze River in China. Except in cold and arid areas, China has no distribution boundary. Mustard is planted in the eastern coastal provinces, Xinjiang Uygur Autonomous Region in the west, Sanya City in Hainan Province in the south, Mohe City in Heilongjiang Province in the north, the middle and lower reaches of the Yangtze River and the Qinghai-Tibet Plateau.