China doesn't produce much natural gas domestically, and the last few years have been a lesson to them in how dangerous relying on other countries for manufacturing inputs is.
On another note, China has slowed down coal production not because of carbon dioxide output, but because of all the acute toxins/pollutants emitted by coal plants. Carbon dioxide is a compound that only developed countries care about, because it has few short term consequences and whose effects aren't observed by your avg. person. Your avg. person, however, does feel the effects of nasty air and acid rain, caused by nitrates/sulfates released by coal plants. This is the chief reason China will publicize moving away from coal. Because of air pollution and acid rain, not because of climate change.