The Doha Climate Gateway launched the second commitment period of the Kyoto Protocol and restated the vision of a new global agreement binding all countries. To reach the goal of the new agreement and further to save the Earth, the principles regarding CBDR of UNFCCC and the Kyoto Protocol may need a reflection and reinterpretation. The common responsibility would be emphasized more than before, and the differentiated responsibility might improve the feasibility to be operated considering the principles of equity and respective capabilities. In climate change conferences, China has shown its flexibility on the issue of a new agreement. As a developing responsible power, China should contribute to addressing climate change upon the call of common responsibility, but it also needs an appropriate differentiated treatment according to its capability.