Fifty representatives of challenge organizers, local officials, sponsors, judges and teams from all over the country participate in the closing ceremony of the Changchun International Driverless Vehicle Ice and Snow Challenge on Jan 14 in Changchun, the capital of Northeast China's Jilin province. Other people watched the ceremony online. At the closing ceremony, the final winning teams of the challenge's three main matches were announced, and relevant officials and guests presented awards to winning teams. [Photo provided to chinadaily.com.cn]