The ratio of college students to total population ranks No.1 among large cities nationwide.
Nanjing is one of the top three Chinese scientific research centers, especially in the chemical sciences, according to the Nature Index.
It is the capital city of Jiangsu province of the People's Republic of China and the second largest city in East China region,, while the Nanjing Metropolitan Region includes surrounding cities and areas, covering over 60 thousand square kilometres, with a population of over 30 million.
Sun Yat-sen Mausoleum 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.
Shortly after the unification of the region, the Western Jin dynasty collapsed.
First the rebellions by eight Jin princes for the throne and later rebellions and invasion from Xiongnu and other nomadic peoples that destroyed the rule of the Jin dynasty in the north.
During the period of North–South division, Nanjing remained the capital of the Southern dynasties for more than two and a half centuries.
During this time, Nanjing was the international hub of East Asia.