The men's doubles event will also be a clash between Chinese and Japanese shuttlers. Fourth-seeded Li Junhui and Liu Yuchen got the better of another Chinese duo, title holders Liu Cheng and Zhang Nan in straight games to set a final against fifth seeds Takeshi Kamura and Keigo Sonoda.

Both China and Japan have already secured one gold medal, as the mixed doubles final will see an all-Chinese duel and two Japanese pairs will take on each other in the women's doubles final.

China's Wang Yilyu and Huang Dongping needed only 30 minutes to cruise past third seeds Tang Chun Man and Tse Ying Suet 21-6, 21-10. Their rivals in the final will be top seeds Zheng and Huang Yaqiong, who came from one game down to overcome another home pair, Zhang Nan and Li Yinhui, 19-21, 21-12, 21-10 to advance.

Zheng and Huang Yaqiong paired up late last year, but have won all their previous four clashes against Wang and Huang Dongping. The recent one was in the final of the Malaysia Open last month, where they defeated their compatriots 21-19, 21-18 to clinch their second title of 2018.

In the women's doubles actions, Wakana Nagahara and Mayu Matsumoto beat Indonesia's pair Greysia Polii and Apriyani Rahayu 21-12, 23-21 to set the final against Yuki Fukushim and Sayaka Hirota, who eliminated Japanese compatriots Koharu Yonemoto and Shiho Tanaka 21-19, 21-15 in Saturday's other semifinal.

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