Chang Liu defeated Ao Gai 6-3 6-4 in the Shenzhen 10K qualifying round on hard.
Liu C. took it in straight sets.
Chang Liu beat Ao Gai 6-3 6-4. Umpiry, "Chang Liu vs Ao Gai — Shenzhen 10K Qualifying Round", https://umpiry.com/match/2014-03-24/gai-vs-liu-shenzhen-10k-qf?utm_source=cite (as of 24 March 2014).