Wanshou fruit tree, commonly known as "strange week", also known as papaya, kiwi fruit, golden hook, chicken, Mimi, pear jujube, citrus, etc., belongs to rhamnaceae, and Fructus Aurantii is a woody plant. Deciduous trees, up to 10 m; Shoots, abaxial surfaces of young leaves, petioles and inflorescence axes are initially pubescent and then shed. Leaf blade oval to ovoid, wide oval or heart-shaped oval, 8-16cm long, 6- 1 1 cm wide, tapering at the top, round or heart-shaped at the base, often asymmetrical, serrated at the edge, hairless on the surface, and hairy on the back along or between veins. Fuzzy cymes are terminal and axillary; Flowers are small, yellow-green, about 4.5 mm in diameter; Petals oblate; Styles often diverge to the middle or deep. Fruit stalk is fleshy, twisted and reddish brown; The fruit is nearly spherical, hairless, about 7 mm in diameter and grayish brown. Flowering in June and fruiting in August-10.