NINGBO， April 12 (Xinhua) -- China secured the women's singles gold with its four shuttlers sweeping semifinal spots at the Badminton Asia Championships here on Friday.

He Bingjiao， seeded fifth， claimed a tough victory over top seed An Se-young of South Korea 21-17， 21-18.

"She played very well. She was so confident today that I didn't think I could beat her，" admitted An.

"I had lost to her seven times in a row before this match， so I prepared a lot for today's competition. I was very patient on the court and tried to make fewer mistakes. That's why I could win，" commented He.

He will next take on compatriot Wang Zhiyi， 贺兰县泉达石膏有限公司 who fought from one game down to beat Japan's Aya Ohori 15-21， 首页-大利拉农机有限公司 21-12， 灵武市伙同壁纸有限公司 21-11.

The other women's singles semifinal will pit Olympic champion Chen Yufei against Han Yue. Second seed Chen outlasted Indonesia's Gregoria Mariska Tunjung 21-16，青岛保税区恒祥和贸易有限公司 21-19， 首页-凯加依咖啡有限公司肉制品 while Han stormed to a victory over Japan's Akane Yamaguchi in straight games.

Men's singles top seed Shi Yuqi of China clinched a straight-game win against Thailand's Kunlavut Vitidsarn. Fellow Chinese Li Shifeng overwhelmed defending champion Anthony Sinisuka Ginting of Indonesia 21-9， 21-10.

In the men's doubles， China's Liu Yuchen/Ou Xuanyi booked a berth for the Paris Olympics despite their 21-14， 21-15 loss to fourth seeds Aaron Chia/Soh Wooi Yik of Malaysia.

The Chinese pair's qualification was confirmed after Lee Yang/Wang Chi-lin of Chinese Taipei went down to Malaysia's Goh Sze Fei/Nur Izzuddin 19-21， 21-19， 21-19.

In the women's doubles， Chinese duo Chen Qingchen/Jia Yifan survived an intense battle to beat Rena Miyaura/Ayako Sakuramoto of Japan 21-10， 18-21， 21-19.

Mixed doubles world No. 1 Zheng Siwei/Huang Yaqiong of China also advanced to Saturday's semifinals by defeating Tang Chun-man/Tse Ying-suet of Hong Kong 21-11肉制品， 22-20.  ■

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