The Interim Regulations on the Administration of Carbon Emission Trading were officially implemented on May 1st. As the first specialized regulation in China′s field of climate change response, the Regulation explicitly defined the carbon emission trading market system in the form of an administrative regulation for the first time. As an important supplement to the carbon emission trading market, the national voluntary greenhouse gas emission reduction trading was also launched on January 22nd. By carrying out the trading of Certified Emission Reductions (CCER), it provides support for various market entities in different industries to carry out energy-saving and carbon reduction actions, representing another important market mechanism of the carbon market system. Since then, the national carbon market and the local carbon market have operated in parallel, with the mandatory emission reduction market and the voluntary emission reduction market complementing each other, jointly forming China′s carbon market system.