Chinese cabbage seeds are in the stem of Chinese cabbage. Chinese cabbage, also known as Chinese cabbage and cabbage, is a kind of vegetable belonging to the genus Brassica in Cruciferae. The seeds are produced in the stem of Chinese cabbage, which is a kind of biennial plants. In the first year, it grows roots, stems and leaves, and will blossom and bear fruit in the second year. In the second year of the biennial growth of Chinese cabbage, when the temperature drops, Chinese cabbage will enter the flowering season. During the flowering period, inflorescences will be formed on the stems and many small flowers will grow on the inflorescences. White flowers will bloom first, yellow flowers will bloom later, then the flowers will gradually wither and form fruits, and the Chinese cabbage seeds can be harvested after maturity. Chinese cabbage is a biennial herb with a height of 4-6 cm. The whole plant is slightly white and hairless, and sometimes there are a few bristles on the midvein under the leaves. Basal leaves are large, obovate-oblong to obovate, 3-6 cm long, blunt at the top, wrinkled and wavy at the edge, sometimes with inconspicuous teeth, white and wide midvein; There are many stout lateral veins, the petiole is white, flat, 5-9 cm long and 2-8 cm wide, and the edge has wide thin wings with notches; The upper cauline leaves are oblong-ovate, oblong-lanceolate to long-lanceolate, 2.5-7 cm long, the top is blunt to short and acute, the whole leaf is dentate, stalked or clasped, ear-shaped and frosted.