Bladimir Diaz (2nd L) of Puerto Rico wins 2019 star coach during the 2019 ITTF Star Awards ceremony in Zhengzhou, central China's Henan province, on Dec 11, 2019. [Photo/Xinhua]

Liu Shiwen of China reacts during the 2019 ITTF Star Awards ceremony in Zhengzhou, central China's Henan province, on Dec 11, 2019. [Photo/Xinhua]

ITTF president Thomas Weikert delivers a speech during the 2019 ITTF Star Awards ceremony in Zhengzhou, central China's Henan province, on Dec 11, 2019. [Photo/Xinhua]

Ma Long of China delivers a speech during the 2019 ITTF Star Awards ceremony in Zhengzhou, central China's Henan province, on Dec 11, 2019. [Photo/Xinhua]

Xu Xin (2nd R) and Fan Zhendong (1st L) of China win star point of the year during the 2019 ITTF Star Awards ceremony in Zhengzhou, central China's Henan province, on Dec 11, 2019. [Photo/Xinhua]

Lily Zhang (C) wins breakthrough star of the year during the 2019 ITTF Star Awards ceremony in Zhengzhou, central China's Henan province, on Dec 11, 2019. [Photo/Xinhua]