A volunteer from Lanzhou University of Technology closes his eyes to listen to a movie as he tries to feel the world of the blind at Lanzhou School for the Blind, Deaf and Dumb in Lanzhou, capital of northwest China's Gansu Province, Dec. 4, 2012, a day ahead of the International Volunteer Day. The International Volunteer Day, which falls on Dec. 5 every year, is an international observance designated by the United Nations since 1985. (Xinhua/Huang Wenxin)