Pusarla V. Sindhu of India celebrates after winning the women's singles semifinal match against Akane Yamaguchi of Japan at the BWF (Badminton World Federation) World Championships 2018 in Nanjing, capital of east China's Jiangsu Province, Aug. 4, 2018. Pusarla V. Sindhu won 2-0. (Xinhua/Li Xiang)

Li Junhui(Top, L) and Liu Yuchen ( Top, R) of China greet Liu Cheng(1st L) and Zhang Nan of China after their men's doubles semifinal match at the BWF (Badminton World Federation) World Championships 2018 in Nanjing, capital of east China's Jiangsu Province, Aug. 4, 2018. Li and Liu won 2-0. (Xinhua/Ji Chunpeng)

Li Junhui (R) of China talks with his partner Liu Yuchen during the men's doubles semifinal match against Liu Cheng and Zhang Nan of China at the BWF (Badminton World Federation) World Championships 2018 in Nanjing, capital of east China's Jiangsu Province, Aug. 4, 2018. Li and Liu won 2-0. (Xinhua/Li Bo)

Li Junhui and Liu Yuchen (R) of China celebrate after winning the men's doubles semifinal match against Liu Cheng and Zhang Nan of China at the BWF (Badminton World Federation) World Championships 2018 in Nanjing, capital of east China's Jiangsu Province, Aug. 4, 2018. Li and Liu won 2-0. (Xinhua/Li Xiang)

Li Junhui and Liu Yuchen (Top) of China celebrate after winning the men's doubles semifinal match against Liu Cheng and Zhang Nan of China at the BWF (Badminton World Federation) World Championships 2018 in Nanjing, capital of east China's Jiangsu Province, Aug. 4, 2018. Li and Liu won 2-0. (Xinhua/Ji Chunpeng)