Chinese Premier Li Keqiang (L) presents a burr puzzle to German Chancellor Angela Merkel as they attend a China-Germany economic and technological cooperation forum in Berlin, Germany, Oct. 10, 2014. According to Li, the burr puzzle, a kind of traditional Chinese toy bricks, made by students and teachers from China's Tianjin Sino-German Vocational Technical College, represents his best wishes for the future cooperation between the two countries. (Xinhua/Li Xueren) |