President Xi Jinping has said that China must cooperate with other nations to tackle climate change.

President Xi Jinping, has a duty to defend China

The president gave the assurance on Wednesday at the opening of a key congress of the Communist Party of China.

He said that China would help to ensure the survival of mankind.

China, the world’s second-largest economy, overtook the U.S. as the world’s biggest emitter of greenhouse gases in 2007.