Second seeds Mizuki Fujii-Reika Kakiiwa of Japan were stunned by unseeded Chinese duo Huan Xia-Tang Jinhua (right), who won in straight games 21-15, 21-14.
Huan Xia-Tang Jinhua, who beat their opponents in the semi-finals of the China Masters last year en route to winning the title, have shown tremendous potential in recent times.
Another young Chinese pair who already have a Superseries title to their names are sixth seeds Bao Yixin-Zhong Qianxin, who continued their winning streak against third seeds Shizuka Matsuo-Mami Naito, beating the Japanese girls for the fourth straight match, this time with a 19-21, 21-19, 21-17, score line.
Bao Yixin-Zhong Qianxin had also beaten Matsuo-Naito en route to winning the Japan Open last year.
In the semi-finals, they will meet top seeds Ha Jung Eun-Kim Min Jung, who beat Cheng Wen Hsing-Chien Yu Chin 29-30, 21-19, 21-12.
Huan Xia-Tang Jinhua, meanwhile, will take on Malaysia’s Chin Eei Hui-Wong Pei Tty, who stunned fifth seeded Danes, Christinna Pedersen-Kamilla Rytter Juhl 21-18, 15-21, 21-7.
In the singles competition, Saina Nehwal (left), and Wang Shixian stayed on course to meet in Sunday’s final after winning their respective quarter-final matches.
Third seed Saina, who beat China’s Liu Xin 21-12, 21-13, in 34 minutes, will meet Japan’s Minatsu Mitani for a place in the final.
The unseeded Japanese star upset Bae Youn Joo 21-12, 21-16 to make full use of her good fortune in this tournament. Mitani was supposed to meet world champion Wang Yihan in the second round, but the Chinese ace was forced to concede a walkover.
Wang Shixian ended Europe’s last hope in the event, beating Germany’s Juliane Schenk 21-14, 21-10, and will now face world junior champion Inthanon Ratchanok, who beat Sung Ji Hyun 21-14, 14-21, 22-20.
In the mixed doubles, newly crowned All England champions Tontowi Ahmad-Liliyana Natsir once again got the better of Malaysia’s Chan Peng Soon-Goh Liu Ying and will face Britain’s Chris Adcock-Imogen Bankier (right), for a place in the final.
The Indonesians beat Peng Soon-Liu Ying in last week’s All England semi-finals.
Bao Yixin stayed on course for a second title in the tournament when she partnered He Hanbin to a surprise 21-18, 18-21, 21-18 victory over second seeds Chen Hung Ling-Cheng Wen Hsing.
For full results, click here.