The Hall's crabapple (Malus halliana) belongs to Rosaceae (the Rose family). It is a semi-tall deciduous tree that is native to western China. This tree can reach 5-8 m in height with smooth and gray barks. The leaves are elliptic, opposite and petiolated. Pale rose-pink flowers come in April and May. The fruits are pomes and ripen yellow in fall. In China, it is called "垂絲海棠" (chui si hai tang) and is said to resemble Yang Guifei, who was drunk on wine and was sleeping slightly.