(210731) -- TOKYO, July 31, 2021 (Xinhua) -- Members of Team Poland celebrate after winning the 4 x 400m relay mixed final at Tokyo 2020 Olympic Games, in Tokyo, Japan, July 31, 2021. (Xinhua/Jia Yuchen) - Jia Yuchen -//CHINENOUVELLE_XxjpbeE008550_20210731_MVPFN0A001/2107311604