Photo taken on April 22, 2011 shows the exterior of the newly-built library of humanistic disciplines and social sciences in Tsinghua University in Beijing, capital of China. The library, designed by famous architect Mario Botta of Switzerland, has 1.5 million collections and over 1,000 seats. [Photo/Xinhua]

Students study in the newly-built library of humanistic disciplines and social sciences in Tsinghua University in Beijing, capital of China, April 21, 2011. The library, designed by famous architect Mario Botta of Switzerland, has 1.5 million collections and over 1,000 seats. [Photo/Xinhua]