China will continue to work with other countries to advance the international efforts in tackling climate change, Premier Wen Jiabao said Sunday after the close of the annual parliament session.

Wen said he wrote to UN Secretary-General Ban Ki-moon and Danish Prime Minister Lars Loekke Rasmussen, respectively, at the end of January after the Copenhagen conference, expressing in clear-cut terms that China highly commends and supports the Copenhagen Accord.

Not long ago, China once again wrote to the United Nations, expressing that China fully supports the Copenhagen Accord, he said.

"(But) It still perplexes me why some people keep trying to make an issue about China (in this regard)," Wen told a press conference after the annual session of the National People's Congress (NPC) closed.

"The issue of climate change concerns human survival, the interests of all countries, and equity and justice in our international communities," he said.

"We are fully justified to stick to the principle of 'common but differentiated responsibilities,'" he said.

China has said it would endeavor to lower its carbon dioxide emissions per unit of gross domestic product (GDP) by 40 to 45 percent by 2020 compared with 2005 levels.