Chinese top state and Communist Party leaders Hu Jintao (C, front), Wu Bangguo (3rd R, front), Wen Jiabao (3rd L, front), Jia Qinglin (2nd R, front), Xi Jinping (2nd L, front) and Li Keqiang (R, front) attend a convention marking the centennial anniversary of the founding of Tsinghua University in Beijing, capital of China, April 24, 2011. [Photo/Xinhua]