The top seeds each made light work of their respective opponents on the second day of the event at the Melbourne Sports and Aquatics Centre.

Chen, seeking a fifth straight continental women's singles title, dispatched team-mate Chloe Lee 21-12, 21-9 in just 27 minutes to reach the last eight.

The Taiwanese-born player will go up against Claudia Lam, a 21-8, 21-17 winner over New Caledonia's Johanna Kou, for a place in the semi-finals.

Second seed Louisa Ma joined Chen in the quarter-finals with a 21-15, 21-18 victory against Dgenyva Matauli of New Caledonia.

Jennifer Lam of Australia, seeded third, progressed as she beat compatriot Lauren Lim 21-15, 21-15.

Manota, bidding to retain the men's singles crown he clinched last year, also breezed into the last eight as he defeated Australia's Jonathan Wong 21-14, 21-16.

The New Zealander's opponent in the quarter-finals will be seventh seed Peter Yan of Australia, who overcame team-mate Hoe Keat Oon 24-22, 21-17 in a hard-fought contest.

Daniel Fan of Australia, the second seed, ease to a 21-10 21-10 win over compatriot Andrew Belcher, while third seed Pit Seng Low beat Anthony Wong 21-14, 21-11 in another all-Australian affair.

The tournament in Melbourne continues tomorrow.