Li Keqiang, vice premier of the State Council of China, left, delivers a keynote speech as other speakers, from right, Zeng Peiyan, chairperson of the Global Think Tank summit, Romano Prodi, former president of the European Commission and former prime minister of Italy and Henry Kissinger, former Secretary of State of the United States attend the opening ceremony of the Global Think Tank Summit held in Beijing, China, Thursday, July 2 , 2009.