The Chinese Taipei player lost his third round clash in three against Japan's Kodai Naraoka at the Nguyen Du Stadium.

Naraoka triumphed 21-17, 17-21, 21-15 to book his place in the quarter-finals.

It means Hsu will not add to the mixed team title he won with his country at their home Universiade in Taipei last month.

Thailand's Khosit Phetpradab is now the top-ranked player left in after the third seed ousted Japan's Yu Igarashi.

Phetpradab won 21-19, 21-15.

Vietnam's best chance of a home winner, ninth seed Nguyễn Tiến Minh, was also knocked out.

He lost to Malaysia's eighth seed Liew Daren 21-16, 21-14.

In the women's competition, second round matches were played as players also bid for a spot in the last eight.

Japan's top seed Sayaka Takahashi defeated Vietnam's home hope Nguyễn Thùy Linh 21-14, 21-11 to progress.

Indonesia's second seed Hanna Ramadini is also through, defeating Yeo Jia Min of Singapore 21-18, 21-16.

Vietnam do still have hope for a home winner as their fourth seed Vũ Thị Trang progressed.

She beat Thailand's Sarita Suwannakitborihan 21-16, 21-18 to make the quarter-finals.

Last eight matches will take place tomorrow.