It is praised as the “three rivers and five lakes, and the control of the finer and better lakes”[citation needed]. It relies on high-speed railways and aviation hubs to connect three important economic circles (Yangtze River Delta, Pearl River Delta, Inter-provincial traffic corridors in Haixi District). Nanchang is one of the country's comprehensive transportation hubs and one of the most important integrated transportation hubs in Jiangxi.