Smoke billows as the gunpowder exploded in a move to creat a powder-blast mural in a local museum of Quanzhou,southeast China's Fujian Province, May 14, 2006. Guoqiang, a Chinese artist living in the United States, was to blast the world's largest mural of its kind, which is 18 meters long and 9 meters wide and vividly depicts a big fig tree and its roots. [Xinhua]