Sole surviving seed Alize Cornet of France beat 2009 champion Shahar Peer of Israel 3-6 7-5 6-1 in the second round of the Guangzhou Open.
No.2 Cornet overcame nine double faults and seven service breaks on Wednesday.
Cornet is the only seed to reach the second round, following shock losses such as that of Australia's Samantha Stosur, and will next meet Taiwanese wild card Hsieh Su-Wei, the 2012 champ.
Hsieh beat Chinese wild card Zhu Lin 6-4, 6-2.
Wang Yafan, the Chinese wild card who stunned top seed Stosur in her first WTA main draw match on Tuesday, defeated Croatian qualifier Petra Martic 7-6 (5), 6-3.
Wang's quarter-final opponent will be countrywoman Zhang Kai-Lan.
In other quarter-finals, Romanian Monica Niculescu will play Puerto Rico's Monica Puig, and Switzerland's Timea Bacsinszky faces Spain's Maria-Teresa Torro-Flor.
All four have one career WTA title, with Puig and Torro-Flor winning their first this year.
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