Yui Hamamoto (L) / Hina Hayata of Japan competes during the women's doubles final match against Doo Hoi Kem / Lee Ho Ching of China's Hong Kong at the Qatar 2016 ITTF World Tour Grand Finals in Doha, capital of Qatar, on Dec. 11, 2016. Yui Hamamoto/Hina Hayata claimed the title with 4-2 . (Xinhua/Nikku)