Lin Gaoyuan (L) and Chen Xingtong of China celebrate after winning the mixed doubles final match against Morizono Masataka and Ito Mima of Japan at the 2018 ITTF World tour China Open in Shenzhen, south China's Guangdong Province, June 2, 2018. Lin Gaoyuan and Chen Xingtong claimed the title with 3-1.(Xinhua/Wang Dongzhen)

Morizono Masataka (L) and Ito Mima of Japan compete during the mixed doubles final match against Lin Gaoyuan and Chen Xingtong of China at the 2018 ITTF World tour China Open in Shenzhen, south China's Guangdong Province, June 2, 2018. Morizono Masataka and Ito Mima lost 1-3. (Xinhua/Wang Dongzhen)

Ma Long of China returns the ball during the men's singles quarterfinal match against Liang Jingkun of China at the 2018 ITTF World tour China Open in Shenzhen, south China's Guangdong Province, June 2, 2018. Ma Long won 4-3. (Xinhua/Mao Siqian)

Ma Long of China celebrates after winning the men's singles quarterfinal match against Liang Jingkun of China at the 2018 ITTF World tour China Open in Shenzhen, south China's Guangdong Province, June 2, 2018. Ma Long won 4-3. (Xinhua/Mao Siqian)

Liang Jingkun of China returns the ball during the men's singles quarterfinal match against Ma Long of China at the 2018 ITTF World tour China Open in Shenzhen, south China's Guangdong Province, June 2, 2018. Liang Jingkun lost 3-4. (Xinhua/Mao Siqian)

Morizono Masataka (L) and Ito Mima of Japan compete during the mixed doubles final match against Lin Gaoyuan and Chen Xingtong of China at the 2018 ITTF World tour China Open in Shenzhen, south China's Guangdong Province, June 2, 2018. Morizono Masataka and Ito Mima lost 1-3. (Xinhua/Wang Dongzhen)

Niwa Koki of Japan competes during the men's singles quarterfinal match against Fan Zhendong of China at the 2018 ITTF World tour China Open in Shenzhen, south China's Guangdong Province, June 2, 2018. Niwa Koki lost 1-4. (Xinhua/Mao Siqian)

Morizono Masataka (R) and Ito Mima of Japan pose during the awarding ceremony after the mixed doubles final match against Lin Gaoyuan and Chen Xingtong of China at the 2018 ITTF World tour China Open in Shenzhen, south China's Guangdong Province, June 2, 2018. Morizono Masataka and Ito Mima lost 1-3. (Xinhua/Wang Dongzhen)

Ma Long of China celebrates during the men's singles quarterfinal match against Liang Jingkun of China at the 2018 ITTF World tour China Open in Shenzhen, south China's Guangdong Province, June 2, 2018. Ma Long won 4-3. (Xinhua/Mao Siqian)

Niwa Koki of Japan reacts during the men's singles quarterfinal match against Fan Zhendong of China at the 2018 ITTF World tour China Open in Shenzhen, south China's Guangdong Province, June 2, 2018. Niwa Koki lost 1-4. (Xinhua/Mao Siqian)