On Oct. 24, the wall of a building in Shenyang, Liaoning province was illuminated by lights designed to resemble the periodic table, attracting passersby to view this interesting arrangement. Photo: CFP

On Oct. 24, the wall of a building in Shenyang, Liaoning province was illuminated by lights designed to resemble the periodic table, attracting passersby to view this interesting arrangement. Photo: CFP