Great Britain's world champions Nathan Robertson and Gail Emms booked their place in the semi-finals of the mixed doubles at the Korean Open in Seoul.
Emms and Robertson are into the semi-finals in Seoul
The English pair upset Thai second seeds Sudket Prapakamol and Saralee Thoughthongkam 21-18 21-12 and now meet Danes Thomas Laybourn and Kamilla Juhl.
England's David Lindley and Suzanne Rayappan bowed out when they lost to Zheng Bo and Gao Ling 21-12 21-11.
Gao and Zheng face Xie Zhongbo and Zhang Yawen in an all-Chinese semi.
China's world number one Lin Dan booked a spot in the semi-finals of the men's singles with a convincing 21-18 21-15 victory over Mohammad Roslin Hashim of Malaysia.
He now meet compatriots Bao Chunlai for a spot in the final.