Chinese President Hu Jintao's special representatives, Vice Premier Wang Qishan, State Councilor Dai Bingguo, U.S. President Barack Obama's special representatives, Secretary of State Hillary Clinton and Treasury Secretary Timothy Geithner pose for a group photo along with other representatives prior to the opening of the second round of China-U.S. strategic and economic dialogue at the Great Hall of the People in Beijing, capital of China, May 24, 2010. [Xinhua]