Kai Chen Chang defeated Yafan Wang 6-3 1-6 6-4 in the Nanchang quarter-final on hard. The upset overturned the form book — Yafan Wang came in defending last year's quarter-final, but Kai Chen Chang had been the form player, winning 6 of their last 10 on hard.
Chen Chang K. came through in three sets.
Kai Chen Chang beat Yafan Wang 6-3 1-6 6-4. Umpiry, "Kai Chen Chang vs Yafan Wang — Nanchang Quarter-final", https://umpiry.com/match/2015-07-31/chang-vs-wang-nanchang-qf?utm_source=cite (as of 31 July 2015).