Zhongjiang County is located in the northwest of the Sichuan Basin and is affiliated to Deyang City, which is located in the Chengde Mian Economic Circle. The natural conditions are unique, the regional features are obvious, and the traditional processing techniques are available. The Zhongjiang noodles are soft, white, even and smooth, as fine as silver, and each side has a diameter of only 0.75-1.25 mm. Long-cooked and not paste, no sticky teeth, the body has micropores due to repeated fermentation, so there is a "hollow noodle". Due to its complicated process, production is limited by climate, and it has been used as a tribute to the past.

Zhongjiang Salvia is an ecological type formed by differentiation and development under special ecological environment. Its main producing area, Zhongjiang County of Deyang City, is the first batch of national-level national pollution-free Chinese herbal medicine production demonstration base county. The large-scale artificial planting of Zhongjiang Danshen has a long history. The unique natural conditions make Zhongjiang Danshen have the characteristics of high quality and high content of pharmaceutical ingredients. The unit yield, drug potency, root color and appearance are the highest in the country. It is 10-30cm long and 0.5-1.5cm in diameter. The content of tanshinone IIA (C19H1803) is between 0.20% and 0.37%, which meets or exceeds the pharmacopoeia. The content of salvianolic acid B (C36H30016) is ≥1. O%, far higher than the pharmacopoeia regulations, and contains more than 50 kinds of active ingredients such as Danshensu, salvianolic acid, tanshinone llB, and cryptotanshinone, far exceeding the same content of Danshen from other places of origin, has been the traditional Chinese traditional Chinese medicine Danshen The main source of high-quality medicinal herbs is well-known in China and abroad.

Zhongjiang white pheasant has a long history of cultivation and high quality. It has the characteristics of thick root, strong and strong, firm, heavy weight, thick foot, smooth surface, moderate yellow and white color, and white inner heart. It has the name of “silver heart”. Zhongjiang County has warm and humid climate, abundant sunshine and moderate rainfall. The soil in the producing area is mainly purple soil, the soil texture is moderate, the acid and alkali are suitable, the available phosphorus and effective iron, manganese and copper are sufficient, which is very suitable for the pollution-free production of Zhongjiang white peony. Zhongjiang Baiyu benefits from its unique geographical environment. Its large-scale artificial cultivation unit yield, drug potency, root color and appearance are among the highest in the country.