To restart cooperation, the USA should seriously reflect on its actions on the Taiwan issue and avoid any behavior that could escalate the tense situation.
Kerry said that he had sent an email to China's climate change affairs special envoy Xie Zhenhua in September, but did not receive any reply.

Officials warn that the recent floods in Pakistan will disrupt economic growth and lead to severe food shortages.
Image Source: AAMIR QURESHI/AGENCE FRANCE-PRESSE/GETTY IMAGES
In October, in order to slow down China's progress in developing advanced technologies, the Biden administration issued , intensifying the tension between the United States and China.
In recent months, the impact of the conflict in Ukraine on climate negotiations has intensified. As the climate and environment ministers of the Group of Twenty (G20) were preparing to hold a meeting in August, they quickly realized that it was impossible for countries to reach a consensus under the influence of the Russia-Ukraine conflict.
Officials participating in these talks stated that the United States, European countries, and their allies hope to refer to the Russia-Ukraine conflict as a war in the concluding remarks of that meeting, describing its adverse effects on the global energy market. Russian officials, however, only want to mention "geopolitical tensions." Officials said that at the time, the host country of the G20 Bali Summit, Indonesia, hoped to set aside the controversy over the Ukraine issue, and China, India, and other developing countries also supported this approach.
According to officials familiar with the discussions, ...