Chinese President Hu Jintao will show China's support for greater role of the United Nations in handling international affairs when he attends a series of summits later this month, a Chinese UN envoy said Friday.

From Sept. 21 to Sept. 25, President Hu will attend in New York the UN Climate Change Summit, the 64th annual general debate of the UN General Assembly, the nuclear non-proliferation and disarmament summit of UN Security Council and the Group of 20 (G20) financial summit in Pittsburgh.

This overseas visit by President Hu is "a major diplomatic move" at a time when the People's Republic of China is about to celebrate the 60th anniversary of its founding on Oct. 1, Ambassador Zhang Yesui told a press briefing at UN Headquarters.

It is also the first time that a Chinese head of state will attend so many summits for a single visit, Zhang noted.

"At these summits, President Hu will show China's support for multilateralism, the promotion of effective cooperation to tackle common threats and challenges faced by the international community and greater role of the United Nations in handling international affairs," he said.

The ambassador said that the summits will focus on a wide range of issues, including climate change, nuclear non-proliferation and disarmament, the economic and financial crisis, regional hot spots and development.

At the summits, President Hu will elaborate on China's stance and policies on major global issues, and exchange views with foreign leaders on ways to strengthen international cooperation, Zhang added.