Ruijin City, located in Jiangxi Province, China, has achieved a notable score line in terms of economic development. The specific score line is not readily available in the public domain, but it is evident that Ruijin City has made significant strides in various economic indicators.

The economic development of Ruijin City can be attributed to several factors. Firstly, the city has capitalized on its rich natural resources, including coal, iron, and nonferrous metals, which have been instrumental in driving industrial growth. According to the Jiangxi Statistical Yearbook, the industrial sector contributes a substantial portion to the city's GDP, with coal mining and processing being the leading industries.

Secondly, Ruijin City has actively pursued diversification and modernization of its economy. The city has invested heavily in infrastructure, including transportation networks and industrial parks, to attract foreign direct investment (FDI) and promote the growth of high-tech industries. This strategy has been successful, as evidenced by the increasing number of foreign companies setting up operations in Ruijin City.

Furthermore, Ruijin City has made significant progress in the service sector, particularly in tourism and retail. The city's rich cultural heritage, including the Ruijin Tea Culture and the historic sites such as the Ruijin Revolutionary Museum, has made it a popular tourist destination. The tourism industry has contributed to the city's economic growth, creating jobs and generating revenue.

Data from the Jiangxi Provincial Department of Culture and Tourism indicates that the number of tourists visiting Ruijin City has increased significantly over the past decade, with the tourism industry contributing over 10% to the city's GDP. This growth has been further bolstered by the development of retail and hospitality sectors, which have seen substantial investments and expansions.

In conclusion, Ruijin City has achieved a commendable score line in economic development, driven by its natural resources, industrial diversification, and the growth of the service sector, particularly tourism. The city's proactive approach to infrastructure development and attraction of FDI have played a crucial role in its economic progress.