Chinese President Xi Jinping has vowed to protect the landmark Paris agreement, which aims to curb climate change and fossil fuel emissions.
He made the promise in a phone call with incoming French President Emmanuel Macron.
US President Donald Trump is still deciding whether to withdraw from the agreement.
A White House meeting to discuss the topic yesterday was postponed, amid reports of divisions among senior Trump advisers.
It is the second time the meeting has been cancelled.
Source: BBC