Shanghai, situated on the banks of the Yangtze River Delta in East China, is the largest city of the People's Republic of China and the eighth largest in the world.
Widely regarded as the citadel of China's modern economy, the city also serves as one of the nation's most important cultural, commercial, financial, industrial and communications centers.
Also, Shanghai is one of the world's busiest ports, and became the largest cargo port in the world in 2005 (Wikipedia)