China has argued that developed countries should take the lead in international climate change mitigation, while developing countries should be allowed to realize their economic development and implement voluntary measures. This position may seem purely political. However, this article shows that Chinese science also contributes to constructing the perspectives of development, equity, and responsibility. Chinese climate models, emission graphs, and graphs of future emissions are presented to show that these scientific inscriptions contain and coproduce these values in conjunction with political inscriptions. The findings demonstrate that scientific inscriptions are essential to stabilize the Chinese climate network, and that political practice cannot separate scientific facts from political contestation over climate and development.