A DDC 30-second interactive rope-skipping World Cup competition was held in Norway on Sunday.Students from east China's Nantong city, Jiangsu province, won 9 golds, 8 silvers and 12 bronzes. 6 students from anindustrial park primary school of Nantong signed up for 36 events in 9 categories. Ma Chengming jumped 1095 times in 3 minutes, averaging once for every second, setting a world record. The competition attracted 975 athletes from 26 countries and regions, setting a record high in history.
