Shanghai covers a total area of 6,340 square kilometers and governs 16 municipal districts. It has a subtropical humid monsoon climate with four distinct seasons, abundant sunshine and rainfall.

In 20 15, Shanghai's GDP ranked first in China and second in Asia, second only to Tokyo. Shanghai is also a world-famous financial center and one of the largest metropolitan areas in the world. The Yangtze River Delta urban agglomeration consisting of Shanghai, Anhui, Jiangsu and Zhejiang has become one of the six world-class urban agglomerations [1 1]. In 20 16, the per capita disposable income of residents reached 54305 yuan, and the total retail sales of social consumer goods reached 1094657 million yuan.