National flags fly outside a dormitory building in Zhejiang University of Technology in Hangzhou, capital of east China's Zhejiang Province, on Sept. 20, 2009. Students in the Zhejiang University of Technology initiate an activity that hanging national flags on their dormitory balconies to celebrate the upcoming 60th anniversary of the founding of the People's Republic of China. More than 1000 national flags have been fluttering in the breeze in the college. [Photo: Xinhua]