China's Chen Jin and Wang Chen claimed victory in Sunday's Hong Kong Open singles finals.
Jin pulled off an upset by beating Beijing Olympics gold medallist Lin Dan 21-9 9-21 21-17 in the men's event, while home favourite Chen ran out a 21-16 10-21 21-10 winner against Olympic silver medallist Xie Xingfang.
"I'm not surprised to have beaten Lin," third seed Chen said afterwards. "I beat him at the All England Championships earlier this year.
"I think the first game was critical and I won some critical points."
Wang also pulled off something of a surprise in what she has confirmed will be her last appearance at the tournament.
"I'm definitely not coming back," she said. "I feel close to retirement and each match is one step closer to retirement, so I'm enjoying the games more than before because of that."
China's mixed doubles pairing of Xie Zhongbo and Zhang Yawen also beat South Korea's Lee Yong-Dae and Lee Hyo-Jung 21-14 21-16.
And in the women's doubles Zhang Yawen and Zhao Tingting of China defeated compatriots Cheng Shu and Zhao Yunlei 21-14 21-13.
Korean men's duo Jung Jae-Sung and Lee Yong-Dae were the only non-Chinese performers to win meanwhile, as they beat Malaysia's Mohd Zakry Abdul Latif and Mohd Fairuzizuan Mohd Tazari 25-23 19-21 22-20.