That is because people who live in China are more concentrated on getting a better economic position. This means they build lots of factories of all sorts. They dump waste in the water so that means China's waterway pollution is very severe. China economic position is growing at 10% a year. Now though, they're trying to be a little more eco-friendly.
Another Answer
Actually there are more people in china than anywhere else in the world. The population of entire china is 1.5 billion! Since there are so many people in china, there must be high traffic pollution and high carbon dioxide levels over there. There are also a lot of people who smoke in public, and littering and spitting everywhere. There are some people who dump garbage and dirty water into farmwaters, causing water pollution.
Air Hong Kong was created in 1986-11.
air and water pollution from rapid urbanization is one of the most concerning problems .
Hong Kong Air International Ltd ended in 1976.
Royal Hong Kong Auxiliary Air Force ended in 1993.
Royal Hong Kong Auxiliary Air Force was created in 1949.
Hong Kong Air Cargo Terminals Limited was created in 1971.
8,040 air miles (Hong Kong (HKG) to Newark Int'l Arpt, Newark, NJ (EWR)).
About 7,947 air miles.
By air, there are some discount ticket from Hong Kong to Shanghai. By train, if you have enough time, you can travel to Shanghai by train from Hong Kong: T100, 19 hours.
7,830 air miles.
The air distance from Hong Kong to Chongqing, China, totals 687 miles. That equals 1,106 kilometers or 597 nautical miles.
The distance is about 1,805 air miles.