Lee Yang/Wang Chi-lin (R) of Chinese Taipei compete during the men's doubles group B match against Aaron Chia/Soh Wooi Yik of Malaysia at BWF World Tour Finals 2019 in Guangzhou, capital of south China's Guangdong Province, Dec. 12, 2019. (Xinhua/Lu Hanxin)
Lee Yang (top)/Wang Chi-lin of Chinese Taipei compete during the men's doubles group B match against Aaron Chia/Soh Wooi Yik of Malaysia at BWF World Tour Finals 2019 in Guangzhou, capital of south China's Guangdong Province, Dec. 12, 2019. (Xinhua/Lu Hanxin)
Aaron Chia/Soh Wooi Yik (L) of Malaysia compete during the men's doubles group B match against Lee Yang/Wang Chi-lin of Chinese Taipei at BWF World Tour Finals 2019 in Guangzhou, capital of south China's Guangdong Province, Dec. 12, 2019. (Xinhua/Lu Hanxin)
Aaron Chia/Soh Wooi Yik (R) of Malaysia compete during the men's doubles group B match against Lee Yang/Wang Chi-lin of Chinese Taipei at BWF World Tour Finals 2019 in Guangzhou, capital of south China's Guangdong Province, Dec. 12, 2019. (Xinhua/Lu Hanxin)
Anthony Sinisuka Ginting of Indonesia hits a return during the men's singles group B match against Chen Long of China at the BWF World Tour Finals 2019 in Guangzhou, capital of south China's Guangdong Province, Dec. 12, 2019. (Xinhua/Lu Hanxin)
Chen Long of China hits a return during the men's singles group B match against Anthony Sinisuka Ginting of Indonesia at the BWF World Tour Finals 2019 in Guangzhou, capital of south China's Guangdong Province, Dec. 12, 2019. (Xinhua/Lu Hanxin)
Kim So Yeong (R)/Kong Hee Yong of South Korea compete during the women's doubles group B match between Kim So Yeong /Kong Hee Yong of South Korea and Jongkolphan Kititharakul/Rawinda Prajongjai of Thailand at the BWF World Tour Finals 2019 in Guangzhou, capital of south China's Guangdong Province, Dec. 12, 2019. (Xinhua/Lu Hanxin)
Kim So Yeong/Kong Hee Yong (R) of South Korea react during the women's doubles group B match between Kim So Yeong /Kong Hee Yong of South Korea and Jongkolphan Kititharakul/Rawinda Prajongjai of Thailand at the BWF World Tour Finals 2019 in Guangzhou, capital of south China's Guangdong Province, Dec. 12, 2019. (Xinhua/Lu Hanxin)
Anthony Sinisuka Ginting of Indonesia hits a return during the men's singles group B match against Chen Long of China at the BWF World Tour Finals 2019 in Guangzhou, capital of south China's Guangdong Province, Dec. 12, 2019. (Xinhua/Lu Hanxin)
Mayu Matsumoto/Wakana Nagahara (front) of Japan compete during the women's doubles group B match between Lee So Hee/Shin Seung Chan of South Korea and Mayu Matsumoto/Wakana Nagahara of Japan at the BWF World Tour Finals 2019 in Guangzhou, capital of south China's Guangdong Province, Dec. 12, 2019. (Xinhua/Lu Hanxin)