Gu Binglin, president of Tsinghua University, addresses a convention marking the centennial anniversary of the founding of Tsinghua University in Beijing, capital of China, April 24, 2011. [Photo/Xinua]

Zhou Qifeng, president of Peking University, addresses a convention marking the centennial anniversary of the founding of Tsinghua University in Beijing, capital of China, April 24, 2011. [Photo/Xinhua]

Richard Levin, president of Yale University, addresses a convention marking the centennial anniversary of the founding of Tsinghua University in Beijing, capital of China, April 24, 2011. [Photo/Xinhua]