Mume is also known as Hehanmei, Tangmeirou, Huangzai, Dried Plum, Mei Shi, Black Plum and Sour Plum. It is a dry and nearly ripe fruit of Prunus mume of Rosaceae. Location: Fujian, Sichuan, Zhejiang, Hunan, Guangdong and other places. In addition, Hubei, Guizhou, Shaanxi, Anhui, Jiangsu, Guangxi, Jiangxi, Henan and other places are also produced. Fujian producers are known as "red plums" because of their fat meat and red ribbons. Chongqing Qijiang is also excellent, and it is known as "big red plum". Irregular spherical or eccentric, with a diameter of 1.2~3cm. The surface is brown-black to grayish-black, shriveled and uneven, and fine hairs can be seen under a magnifying glass, and there are obvious concave round fruit stalk marks at the base. The pulp is soft, dark black or dark brown and easy to peel. The nucleus is hard, oval, brownish yellow, with small pits on the surface, and contains oval and yellowish seeds 1 piece, which looks like almonds in shape and smell. The gas is sour and has a smoky odor, and the taste is extremely sour and astringent.

It is better to be big, heavy, thick, dark, complete, soft and sour.