Nervilia fordii is the leaves of Orchidaceae or leaves with bulbs. Dry leaves are grayish brown to grayish green, rolled into granules, and the petiole is flat with longitudinal stripes. Commodities produced in Guangdong, the leaves are mostly covered with bulbs, and the dried ones are better. Antelope is a kind of artiodactyla cattle. There are 86 species of Tibetan antelope, belonging to 1 1 family and 32 genera. Taxonomically, antelope does not refer to any particular family or genus. Antelopes are characterized by hollow and solid horns, which are different from ruminants such as cattle and sheep. People regard the antelope as a group, and the "antelope expert group" established by the Species Survival Committee regards this animal as a unit of zoological research and protection.