Zhang never posed a threat against her unseeded opponent, she easily won 6-2 7-6 (7-4) to set up a match in the last eight with Tereza Martinkova.
Martinkova defeated eighth-ranked Magda Lynette 6-2 7-6 (7-3) in her round-16 match on Wednesday (June 8).
Victoria Golubic defeated Heather Watson 7-5, 6-2, while the third set between third-seeded Camilla Georgie and Harriet Dart began with a one-on-one set by Britain.
Meanwhile, the Rosemelon Grass Court Championship was marred by rain, with top seed Ariana Sabalenka’s only half-time match against Arian Hartono.
The match was called off the next day after Sabalenka won the first set 6-2.
