The climate crisis is getting worse and the Arctic ecology bears the brunt. The 26th United Nations Conference on Climate Change (COP26) is the "last chance" for mankind to save the planet. This programme explains the history of the United Nations Climate Conference and how the global emission reduction targets are set. In recent years, clean energy transition started in the power generation industry and the popularization of new energy vehicles. Green finance has promoted the transition. Countries have increased the cost of corporate emissions. Both China and foreign countries have actively developed carbon emission rights markets. At the same time, China has proposed the 30/60 dual-carbon target. At a time when geopolitics is intensifying, China and the United States must cooperate on climate change issues to achieve a win-win situation.