The stone column is beryl, the smell is extremely bitter, and it has the characteristics of branch fertilizer, thick meat, long strips, bright color and high effective ingredients. It is of great medical value. The products are gathered in clusters and curved like chicken feet, so it is commonly called "chicken claws". The surface of Coptis is grayish yellow or yellowish brown, rough and slightly lustrous, with irregular detail ridges and hairy residues. The branches have intermittent horizontal stripes, and the nodules are swollen, and the shape is like a bead.

Shizhu Huanglian has a history of more than 1,300 years. In the past, it was mostly a tribute to the court. According to historical records, as early as the first year of Tianbao (AD 742), Shizhu County had tribute to "Yellow Ten pounds, wood medicine 100 capsules." "Tai Ping Yu Yu Ji" records: "Zhongzhou led five counties: Linjiang, Fengdu, Dianjiang, Nanbin (now Shizhu County), Guixi, native bitter medicine, Huanglian ... and only South Binxian can produce berberine." Shizhu County artificially cultivated berberine, which began around the end of the Yuan Dynasty. In the early Ming Dynasty, residents of Shizhu Huangshui Dam and Shuanghekou area planted Huanglian to support their families. In the middle of the Ming Dynasty, the cultivation and processing technology of Coptis was mature and perfect. In the late Ming Dynasty, the Shizhu Yellow Water Dam Field has become a place for the distribution of Huanglian, and drug dealers in Chongqing, Wanxian, Wuhan, and Jiangxi have come. In the forty years of Qing Emperor Qianlong (1775), "Shizhu Hall" recorded: "The medicinal taste is widespread, the berberine is more, the Jiake is coming and going, and the flow is endless." In the first year of Xuantong (1909), "Shizhu Hall Township" wrote: "Huanglian is a large mirror in the hall, and it produces yellow water, Shuanghekou, etc., one year seed, one year shed, planting seedlings for six or seven years, the latter For better, the stem is several inches high, the leaves are fine-edged, the shape is like a dragonfly, the head is a kind of species, and there are chicken feet, flavors, and gold hooks. The sex is consistent with the Yalian." Shizhu Huanglian, also known as Weilian, chicken feet Lian, South Bank, there are heat, dampness, purging fire and detoxification effect, is an important Chinese medicine and ethnic medicine, Li Shizhen listed as the top of 120 Chinese herbal medicines. In 1954, Shizhu Huanglian was officially listed as “National Medicine”, which implemented unified purchase and sales, accounting for two-thirds of all China. In 1959, the Journal of Sichuan Medical College said: "The cultivar of Shizhu Huanglian is excellent, and the yield is national." In 1985, Shizhu Huangshui Huanglian was incorporated into the "Chinese Dictionary of Native Produce" and "The World of China". Today, Shizhu County has 16 townships, 30,000 farmers, 100,000 farmers to plant berberine, has built a GAP base of 50,000 acres, with an annual output of more than 2,000 tons, accounting for 60% of the national total and 40% of the world, far It is sold to more than ten countries and regions throughout the country and North Korea, South Korea, Vietnam, India, Singapore, Hong Kong and Macau.