The two 21-year-olds came from behind from one set down and saved two match points in the second set to beat third seed Japanese pair Mayu Matsumoto and Wakana Nagahara 18-21, 22-20, 21-11.

After the game, Chen said: "We're so happy." Jia added: "It's just fantastic to win the title this year and we beat really strong opponents through all the earlier matches - it just gave us so much motivation and confidence for future performances."

Zheng Siwei and Huang Yaqiong took a sweet revenge on their defeat in last year's final as they beat defending champions Yuta Watanabe and Arisa Higashino of Japan 21-17, 22-20, winning China the third title in this tournament.

Elsewhere, the reigning world champion Kento Momota became the first Japanese men's singles winner in history with a thrilling 21-11, 15-21, 21-15 victory over the 2017 world champion Viktor Axelsen of Denmark.

The 24-year-old world number one said: "Winning this tournament has been a dream from my childhood and having won this it is a really big moment in my life, and gives me a lot of confidence."

The men's doubles champion went to the 2017 winner Mohammad Ahsan and Hendra Setiawan of Indonesia, who grabbed their second title with a win over Aaron Chia and Soh Wooi Yik of Malaysia.

Chia and Soh were able to dominate the first set but were then overtaken by their more experienced rivals, the final score at 11-21, 21-14, 21-12.

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