Gold, a Chinese herbal medicine, is widely used in traditional medicine because of its unique functions of clearing away heat and toxic materials, relieving cough and stopping bleeding. It is mainly suitable for treating cough due to lung heat, hemoptysis, lung carbuncle, dysuria, breast carbuncle, skin carbuncle and traumatic bleeding. This precious Chinese herbal medicine comes from the Gentianaceae plant Hong Kong Butterfly, and its whole herb can be used as medicine. Its Latin name is Tripterospermumnienkui (Marq.) C.J.Wu or GentiananienkuiMarq.；; CrawfurdiafasciculataWall., can be harvested all year round, washed, dried or rarely used.

In use, decoction is usually decocted when taken orally, and the dosage is15-30g each time. For trauma, fresh products can directly play a role in application and treatment. This Chinese herbal medicine is distributed in Zhejiang, Fujian, Hunan, Guangdong, Hainan, Guangxi and other places.

The morphological characteristics of golden thread are even more unique. It is a perennial twining herb with short purple-brown rhizome, dark purple or green stem and 5- 16 cm long internodes. Basal leaves are clustered, oval, with solitary axils. Corolla is varied in color, from purple to blue, sometimes with purple spots, bell-shaped, berries are purple-red, and seeds are purple-black, with reticulation. The flowering period lasts from September to 1 month of the following year.

Generally speaking, Chinese herbal medicine gold is not only a natural medicine for treating various lung and skin diseases in traditional Chinese medicine, but also has research value in botany because of its unique morphological characteristics and medicinal value.