Nian oranges is an evergreen shrub plant that belongs to the subtropical fruit variety.Its crown is round-headed, the leaves are oblong-ovate, and the flowers are white.Nian oranges  not only have ornamental value, but also the fruit is rich in vitamin C, citric acid and sugar, which has a variety of effects such as dissolving phlegm and relieving cough, clearing the heart and moistening the lungs, nourishing the skin, and promoting digestion.At the same time, the peel of tangerines can also be used to make tangerine peel, which has medicinal value.