Shanghai
With a total area of 6340.5 square kilometers and 16 districts, Shanghai is a municipality directly under the central government of the People's Republic of China and the central city of the country, and is the center of China's international economy, finance, trade, shipping, scientific and technological innovation as approved by the State Council of the People's Republic of China, as well as a famous historical and cultural city in China, and a first-tier city in the world.