A team calibrates their robot based on the venue conditions before the start of the competition in Zoucheng, East China's Shandong province, on June 9. Jointly organized by the School Department of the Chinese Communist Youth League, the All-China Students' Federation and the Zoucheng government, the competition challenges teams to design robots to compete at the ancient game of touhu, which requires players to throw arrows into wine pitchers. [Photo by VCG/ dzwww.com]