China's Cheng Shu (L)/Zhao Yunlei compete against their compatriots Ma Jin/Tang Jinhua during their women's doubles semifinal match at the All England Open Badminton Championships in Birmingham, Britain, March 9, 2013. Cheng Shu/Zhao Yunlei won 2-0 to advance to the final. (Xinhua/Tang Shi)

China's Yu Yang(L)/Wang Xiaoli compete against Japan's Miyuki Maeda/Satoko Suetsuna during their women's doubles semifinal match at the All England Open Badminton Championships in Birmingham, Britain, March 9, 2013. The Chinese pair won 2-0 to advance to the final. (Xinhua/Yin Gang)

China's Cheng Shu/Zhao Yunlei (R) compete against their compatriots Ma Jin/Tang Jinhua during their women's doubles semifinal match at the All England Open Badminton Championships in Birmingham, Britain, March 9, 2013. Cheng Shu/Zhao Yunlei won 2-0 to advance to the final. (Xinhua/Tang Shi)

China's Cheng Shu/Zhao Yunlei (L) compete against their compatriots Ma Jin/Tang Jinhua during their women's doubles semifinal match at the All England Open Badminton Championships in Birmingham, Britain, March 9, 2013. Cheng Shu/Zhao Yunlei won 2-0 to advance to the final. (Xinhua/Tang Shi)

China's Ma Jin/Tang Jinhua (R) compete against their compatriots Cheng Shu/Zhao Yunlei during their women's doubles semifinal match at the All England Open Badminton Championships in Birmingham, Britain, March 9, 2013. Cheng Shu/Zhao Yunlei won 2-0 to advance to the final. (Xinhua/Tang Shi)

China's Yu Yang(L)/Wang Xiaoli compete against Japan's Miyuki Maeda/Satoko Suetsuna during their women's doubles semifinal match at the All England Open Badminton Championships in Birmingham, Britain, March 9, 2013. The Chinese pair won 2-0 to advance to the final. (Xinhua/Yin Gang)

China's Ma Jin(R)/Tang Jinhua compete against their compatriots Cheng Shu/Zhao Yunlei during their women's doubles semifinal match at the All England Open Badminton Championships in Birmingham, Britain, March 9, 2013. Cheng Shu/Zhao Yunlei won 2-0 to advance to the final. (Xinhua/Tang Shi)

Japan's Miyuki Maeda/Satoko Suetsuna (L) compete against China's Yu Yang/Wang Xiaoli during their women's doubles semifinal match at the All England Open Badminton Championships in Birmingham, Britain, March 9, 2013. The Chinese pair won 2-0 to advance to the final. (Xinhua/Yin Gang)

China's Yu Yang (L) /Wang Xiaoli compete against Japan's Miyuki Maeda/Satoko Suetsuna during their women's doubles semifinal match at the All England Open Badminton Championships in Birmingham, Britain, March 9, 2013. The Chinese pair won 2-0 to advance to the final. (Xinhua/Tang Shi)

Japan's Miyuki Maeda/Satoko Suetsuna (R) compete against China's Yu Yang/Wang Xiaoli during their women's doubles semifinal match at the All England Open Badminton Championships in Birmingham, Britain, March 9, 2013. The Chinese pair won 2-0 to advance to the final. (Xinhua/Tang Shi)

China's Yu Yang/Wang Xiaoli (R) compete against Japan's Miyuki Maeda/Satoko Suetsuna during their women's doubles semifinal match at the All England Open Badminton Championships in Birmingham, Britain, March 9, 2013. The Chinese pair won 2-0 to advance to the final. (Xinhua/Tang Shi)

China's Cheng Shu/Zhao Yunlei (R) compete against their compatriots Ma Jin/Tang Jinhua during their women's doubles semifinal match at the All England Open Badminton Championships in Birmingham, Britain, March 9, 2013. Cheng Shu/Zhao Yunlei won 2-0 to advance to the final. (Xinhua/Yin Gang)

China's Cheng Shu/Zhao Yunlei (R) compete against their compatriots Ma Jin/Tang Jinhua during their women's doubles semifinal match at the All England Open Badminton Championships in Birmingham, Britain, March 9, 2013. Cheng Shu/Zhao Yunlei won 2-0 to advance to the final. (Xinhua/Yin Gang)