In the past two years, the opening and operation of the Xuzhou-Yancheng and Yancheng-Nantong high-speed rails have enabled Yancheng to fully integrate into the "one-hour economic circle" of Shanghai and Suzhou, the "1.5-hour economic circle" of Nanjing and Hangzhou, and the "one-day business circle" of Beijing. As the center of city administrative culture, business, commerce, science, education and finance, and the core area of urban development, Yannan High-tech Zone keeps in mind the concept of openness, management and competition in the process of coastal development and integration into the Yangtze River Delta to promote all-round high-quality urban development.