That would be “Nationally appropriate mitigation action”, or voluntary goals in the fight against climate change. China has, while making clear that there is no legal obligation involved, stated these goals, which are voluntary in nature:
China will endeavor to lower its carbon dioxide emissions per unit of GDP by 40-45% by 2020 compared to the 2005 level, increase the share of non-fossil fuels in primary energy consumption to around 15% by 2020 and increase forest coverage by 40 million hectares and forest stock volume by 1.3 billion cubic meters by 2020 from the 2005 levels.
On energy, a 15% share of non-fossil fuel is rather close to the EU target of 20% renewable, though China includes also nuclear energy in that 15%.
China of course also has a very own interest in doing this. Not only is Beijing drowning in very heavy air pollution right now. China knows that Shanghai will be gone with a 70 meter sea level rise.
The United States has reported a target of 17 percent reduction by 2020 compared to 2005 in the same voluntary, not legal binding framework.