Consumption is the root cause of the emissions. As long as the demand for goods continues, they have to be produced somewhere. Whether the factories are in US or in China is completely irrelevant.

Furthermore, China is now a world leader in both solar and nuclear, and they're actively exporting this technology. The reality of the situation is that investing into clean energy is very profitable, and China has now secured its position as the world leader. When other countries start getting their act together, they'll be buying this technology from China.