Wannian County is one of the counties and cities around Poyang Lake 15, with rich aquatic resources, developed aquaculture and famous pearl production, especially Huyun Township. Huyun Township, located at the junction of Poyang County, yugan county County and Wannian County, is a typical lakeside area. Huyun Township has 9 village committees and 60 villagers' groups, with 5,923 households and 2,2241person, of which the agricultural population accounts for 94.4% of the total population, with a total land area of 65. 14 square kilometers, including 23,009 mu of cultivated land and a water area of 654,338. Huyun Township, a well-known pearl town, has formed a relatively complete industrial system of pearl mussel breeding, pearl inoculation, pearl breeding and pearl processing. The pearl culture area in Huyun Town is 8050 mu. In 2005, pearls were harvested 12000 kg. Pearl processing includes Haihua pearl daily chemical, pearl powder and pearl jewelry processing factory, and pearl technology development company. Raw pearls and processed products include shaped pearls, nucleated pearls, seedless pearls, pearl skin cream, shower gel, cosmetics, medicinal pearl powder, pearl jewelry, pearl handicrafts and so on. According to statistics, in 2005, there were more than 2,800 pearl and aquatic products employees, accounting for 23.96% of the total labor force, and farmers involved in the pearl industry accounted for about one-third of the total households. Raw pearls and their processing output value/kloc-0.2 million yuan, accounting for 32.9% of the total agricultural output value.

In the process of production development, the village faces the contradiction of asymmetric capital, technology and development. In order to solve this problem, it builds a nest to attract phoenix and cultivates a "permanent" brand. In June, 2002, the township established the "Sanshui" industrial demonstration park, which mainly focuses on pearls, built aquaculture infrastructure, formulated preferential measures, improved services, actively launched investment promotion, introduced Hong Jewelry Co., Ltd. and other foreign-funded enterprises into the park, actively guided township and county pearl breeding and processing enterprises (large households) to enter, promoted various new technologies, introduced new equipment and new technologies, and formed foreign enterprises and local market households to spread their wings. The pearl industry in Hu Yun has developed to today's scale. The former Lake Yuntang Farm has played a great role in promoting pearl production in Huyun Township, and has given strong support in seedling, transplanting, technology and capital, among which the professional and technical personnel have made the most outstanding contribution. Wannian Pearl Group also gave timely guidance. Huyun Township has formed key enterprises such as Pearl Science and Technology Development Co., Ltd., Pearl Daily Chemical Co., Ltd., Wanhong Pearl Breeding Co., Ltd. and Sanshui Industrial Science and Technology Demonstration Park.