CHINA. Chongqing Province. Seafood being sold on the banks of the Yangtze River. The Yangtze River however is reported to be at its lowest level in 150 years as a result of a country-wide drought. It is China's longest river and the third longest in the world. Originating in Tibet, the river flows for 3,964 miles (6,380km) through central China into the East China Sea at Shanghai. 2008.