Iron holly is an evergreen tree or shrub of the holly family and genus, with gray branches, angular branches, and reddish brown color; Leaves alternate, oval to elliptical in shape, with a glossy surface on top; Flowers are unisexual, dioecious, with umbels, oval shaped, small female flowers, and thick stems; The drupe is spherical to elliptical in shape and turns red when ripe; The flowering period is from May to June, and the fruiting period is from September to October. Due to its deep green leaves, purple tender branches, and bright red fruits, it is called "Wan Zi Qian Hong" in garden applications. Iron holly is distributed in North Korea, Japan, Vietnam, and China. Most regions in China, such as Jiangsu, Anhui, and Jiangxi, have cultivation.