A visitor takes a photograph of a piece of work at the "Chinese Happy Heads in Brussels" photography exhibition in Brussels, Belgium, on March 28, 2017. Chinese artist Guo Dongbo and French artist Benoit began a project in 2015 by taking pictures of people in Brussels wearing "Chinese Happy Heads" in daily life. "Chinese Happy Heads in Brussels" photography exhibition will last until April 21. (Xinhua/Ye Pingfan)