Shanghai (Chinese: 上海) is the largest city in China, and one of the largest metropolitan areas in the world, with a total population of over 18 million. The average annual temperature is 64°F. While having a history dating back to 6000 years ago, Shanghai has quickly emerged to be a modern international city with about 200,000 fulltime foreigners working. With more than half of the Fortune 500 corporations setting up regional headquarters in Shanghai, the city residents are welcoming international services such as Wal-Mart, Citigroup, Bank of America.
For more information about Shanghai's climate, transportation, and culture, please see http://en.wikipedia.org/wiki/Shanghai.