In 2022, it officially became a new first-tier city.

Nanjing is an important central city in eastern China, an important scientific research and education base and comprehensive transportation hub in China. It is the only mega-city in the Yangtze River Delta, an important gateway city for the development of the central and western regions driven by the Yangtze River Delta radiation, the first batch of national historical and cultural cities and national key scenic tourist cities.