(190423) -- BUDAPEST, April 23, 2019 (Xinhua) -- Xu Xin(L)/Liu Shiwen of China react prior to the mixed doubles round of 32 match against Thomas Polansky/Hana Matelova of the Czech Republic at 2019 ITTF World Table Tennis Championships in Budapest, Hungary, April 22, 2019. (Xinhua/Lu Yang)