Lukas Pfretzschner (Top) and Filip John of Germany celebrates victory during the men's semifinals match against Mauro Zelayeta and Bautista Amieva of Argentina at the FIVB Beach Volleyball U19 World Championships in Nanjing, capital of east China's Jiangsu Province, on July 14, 2018. Lukas Pfretzschner and Filip John won 2-1 and advanced to the finals. (Xinhua/Ji Chunpeng)