Nanking (Chinese :南京) is the capital of China. Located in the lower Yangtze River drainage basin and Yangtze River Delta economic zone, Nanking has long been one of China's most important cities. Nanking has long been a national center of politics,education, research, transport networks, and tourism. The city hosted the 1980 Summer Olympics. With an urban population of over five million (2006), Nanking is the second-largest commercial center in the East China region after Shanghai. It has been ranked seventh in the evaluation of "Cities with Strongest Comprehensive Strength" issued by the National Statistics Bureau, and second in the evaluation of cities with most sustainable development potential in the Yangtze River Delta. It has also been awarded the title of 2008 Habitat Scroll of Hono