Litchi is an evergreen tree belonging to Sapindaceae. [Litchi is an even-pinnate compound leaf, glabrous, with a stalk, and slender lateral veins; no petals; the core is fruit-shaped, nearly spherical; the seeds are all covered by fleshy arils. The flowering period of litchi is from March to April, and the fruiting period is from May to August. The name of litchi comes from Sima Xiangru's "Shanglin Fu", in which it is written as "Lizhi", and then changed to "Litchi" from about the Eastern Han Dynasty.

Litchi is produced in subtropical regions and is a cultivated fruit tree distributed in Fujian, Taiwan, Zhejiang, Guangdong, Guangxi, Hainan and other places. Litchi likes high-temperature and high-humidity climate, likes sunshine, likes acidic soil rich in humus, and is afraid of frost. Litchi is generally propagated by sowing, layering, and grafting.

"Compendium of Materia Medica" records that lychee has the effects of nourishing the liver and spleen, nourishing the liver and regulating qi, nourishing blood, warming the middle and relieving pain, nourishing the heart and calming the nerves, regulating qi, dispelling stagnation, relieving pain, and preventing diarrhea. Pharmacological studies have shown that lychee core has the effects of lowering blood sugar, blood fat, anti-virus, and anti-liver damage. The theory of traditional Chinese medicine believes that litchi core has the effects of promoting qi and dispelling stagnation, dispelling cold and relieving pain. When mentioning lychee, people will think of the poem "a concubine laughing on a ride in the world of mortals, no one knows that it is a lychee". . China is the origin of lychee and the largest country in lychee industry, with abundant and high-quality lychee varieties in the world. Litchi has the reputation of "the king of all fruits" in history, and it is one of the fruits with the deepest cultural heritage in China. Litchi cultural heritage has Chinese characteristics and global influence, so research on its protection and development is of great significance.