China is one of the countries which use the largest amount of Coal, and they have problem on enforcing laws on managing the factories in China to keep their pollution exhaust within standard. And until now the pollution in China is so serious that it can endanger the health of its own people. An example is the smog in Beijing.
But as China fails to solve this problem (or only selectively solve this problem or a short period when foreign leaders came for summits). I sincerely hope there can be some external pressure outside China to force it face its own problem. Such as enforcing the Chinese factories which export products to US must meet the US air pollution standard.