The annual conference of the Boao Forum for Asia (BFA) closed on Tuesday in southern China's island province of Hainan, after three days of discussions on sustainable development and other major issues facing Asia.

Chinese Vice Premier Li Keqiang attended the opening ceremony and delivered the keynote speech, in which he called for Asian nations to promote internal drivers of growth, and stay open and inclusive in order to achieve sound and sustainable development.

Those attending the annual session included Italian Prime Minister Mario Monti, Kazakhstan's Prime Minister Karim Masimov, Pakistani Prime Minister Yousuf Raza Gilani, Iranian Vice President Mohammad-Javad Mohammadizadeh, Thailand's Deputy Prime Minister Kittiratt Na-Ranong and Vietnamese Deputy Prime Minister Hoang Trung Hai.

More than 2,000 government, business and academic leaders as well as journalists from around the globe attended the meeting, which this year adopted the theme of "Asia in the Changing World: Moving toward Sound and Sustainable Development."

The three-day forum, which started Sunday, focused on three key issues -- exploring the root source of global economy uncertainty, seeking reform and transformation, and Asia's sustainable development.

The forum introduced a wide range of topics, including eurozone debt crises, employment and growth, the reform of the international monetary system and the strategic breakthrough of Asian manufacturing.

A non-governmental and non-profit international organization founded in 2001, BFA has been committed to promoting regional economic integration and bringing Asian countries closer to their development goals.