Liang Jingkun of China reacts during the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Lu Yang)

Liang Jingkun of China reacts during the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Lu Yang)

Liang Jingkun of China reacts during the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Lu Yang)

Ma Long (R) of China celebrates during the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Lu Yang)

Liang Jingkun (R) of China competes during the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Lu Yang)

Ma Long of China celebrates after the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Lu Yang)

Ma Long (L) of China celebrates after the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Lu Yang)

Ma Long of China celebrates during the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Lu Yang)

Ma Long of China reacts during the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Lu Yang)

Ma Long (R) of China celebrates during the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Lu Yang)

Ma Long of China celebrates after the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Han Yan)

Ma Long (R) of China celebrates during the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Lu Yang)

Ma Long of China celebrates after the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Han Yan)

Ma Long (R) of China hugs Liang Jingkun after their men's singles semifinal match at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Han Yan)

Ma Long of China celebrates after the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Han Yan)

Ma Long of China celebrates after the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Han Yan)

Ma Long of China competes during the men's singles semifinal with his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Han Yan)

Ma Long of China celebrates during the men's singles semifinal match between Ma Long of China and his teammate Liang Jingkun at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Han Yan)

Ma Long of China hugs Liang Jingkun (R) after their men's singles semifinal match at 2019 ITTF World Table Tennis Championships in Budapest, Hungary on April 27, 2019. (Xinhua/Lu Yang)