Secretary-General Ban Ki-moon says China's leaders have assured him they want to seal a deal on a new UN climate treaty at a conference in Copenhagen, Denmark, in December.
The UN chief says President Hu Jintao and Premier Wen Jiabao told him during his recent visit to Beijing that China would play an active and constructive role in the negotiations to reach agreement on a treaty to replace the 1997 Kyoto Protocol, which expires in 2012.
Ban told a news conference yesterday that Hu and Wen also agreed on the importance of world leaders showing the way.
The secretary-general said he expects more than 100 heads of state and government to attend a climate summit he is holding at UN headquarters on September 22. He said it would be the largest gathering of leaders on climate change ever held.