China's Wang Shixian hits a return to compatriot Li Xuerui during the women's singles at the Korea Open Superseries on Friday in Seoul. Wang earned an upset victory over Li, world No.4, in 10-21, 21-19, 21-10 to book an all-China semifinal against compatriot Wang Yihan, who won Japan's Nozomi Okuhara in 21-19, 21-13. Photo: CFP