Which city, Nanjing or Ningbo, is the capital city of Jiangsu province of People's Republic of China?
Nanjing Nanjing (  ), formerly romanized as Nanking and Nankin, is a city situated in the heartland of the lower Yangtze River region in China, which has long been a major centre of culture, education, research, politics, economy, transport networks and tourism. It is the capital city of Jiangsu province of People's Republic of China and the second largest city in the east China region, with an area of 6600 km2 and a total population of 10,230,000. The inner area of Nanjing enclosed by the city wall is Nanjing City (南京城), with an area of 55 km, while the Nanjing Metropolitan Region includes surrounding cities and areas, covering over 60 thousand square kilometres, with a population of over 30 million.
Cangzhou Cangzhou () is a prefecture-level city in eastern Hebei province, People's Republic of China. At the 2010 census, Cangzhou's built-up ("or metro") area made of Yunhe, Xinhua districts and Cang County largely being conurbated had a population of 1,205,814 inhabitants, while the prefecture-level administrative unit in total has a population of 7,134,062. It lies approximately 90 km from the major port city of Tianjin, and 180 km from Beijing.