Calling China as a "key participant" in the international system, a member of more than 100 inter-governmental international organizations and a party to over 300 international conventions, he said China is actively involved in international and regional affairs, and has earnestly fulfilled its international responsibilities.

Over the past years, China has sent over 10,000 peacekeepers to 22 UN peacekeeping operations. Over 1,900 Chinese peacekeepers are on active duty, making China the largest troop-contributing country among the five permanent members of the UN Security Council, according to Hu.

"The past 30 years of reform and opening-up have told us that China cannot develop itself in isolation from the world. And it is equally true that the world cannot enjoy prosperity or stability without China," he said.

In a world where the trend toward multipolarity is irreversible, economic globalization is deepening and the scientific and technological revolution is accelerating, China's future is more closely linked with the future of the world than ever before, Hu added.

Asia remains one of world's most dynamic regions

Hu said Saturday that Asia remains one of the world's most dynamic regions, and China will continue to contribute to its development.

Delivering a key-note speech at the opening ceremony of the Boao Forum for Asia (BFA) annual conference, Hu said Asia's development is important not only to Asia's future, but also to the future of the world.

Asia has in recent years enjoyed overall stability and fairly fast economic growth. The idea of developing good neighborly relations and handling problems and differences through dialogue and consultation has gained increasing support among the Asian countries. The numerous Asian regional and sub-regional cooperation mechanisms are playing an increasingly important role in promoting economic growth and stability in Asia, Hu said.

"But Asia also faces some tough challenges in promoting economic development, building political institutions, and maintaining security and stability," he said, pointing out that to realize lasting peace and common prosperity in Asia was a long-term and arduous task.

He vowed that China will work with other Asian countries to seize opportunities, meet challenges and build a peaceful and open Asia of development and cooperation.

The BFA, annually held in Boao of south China's island province of Hainan, was established in 2001 as a platform for high-level interaction between leaders from Asia and the world.