Shuai Zhang defeated Hui Chen 6-1 6-3 in the Chengdu 25K round of 16 on hard.
Zhang S. took it in straight sets.
Shuai Zhang beat Hui Chen 6-1 6-3. Umpiry, "Shuai Zhang vs Hui Chen — Chengdu 25K Round of 16", https://umpiry.com/match/2007-05-07/chen-vs-zhang-chengdu-25k-r16?utm_source=cite (as of 7 May 2007).