Alumni pose for a group photo during a visit to their alma mater, Tsinghua University, in Beijing on April 22, 2011. The centennial anniversary of Tsinghua University falls on Sunday. [Photo/CFP]
An old alumna on a wheelchair takes pictures in Tsinghua University on April 22, 2011. She began to study in the university in 1952 and came from abroad for the centennial anniversary celebration with her husband who was also an alumni of the university. [Photo/CFP]