Answer:
China's air pollution is a problem that they have to deal with. First, China has a great amount of carbon dioxide in one part of the atmosphere. For example, China has factories and other carbon dioxide producers that infect the air. They also have cars and people who release carbon dioxide. Second, China has affected other countries with the number of carbon emissions they have been producing. For example, China has affected countries as far as the U.S, which is 10,807.40 kilometers away from China. That means everyone under 10,807,40 kilometers from China will get affected by their carbon emissions. So, China has to fix their air pollution problem, or other countries and themselves will suffer because of pollution caused by carbon dioxide.
Hope this helps :)