The 10^th seed beat his fourth-ranked opponent 21-18, 21-10 to set up a last-eight tie tomorrow with home favourite Chou Tien-Chen.

Chou, seeded fifth, looked impressive in beating ninth-ranked Boonsak Ponsana of Thailand 21-16, 21-11.

"We both know each other’s style," Wong said of Tian, to whom he lost in the first round of the All England Open earlier this year.

"I was ready for the match.

"He’s a very tough player and very patient.

"Today I played more patiently than him and when I found a chance, I attacked at the first opportunity."

Wong’s compatriot Wei Nan climbed out of a hole against China’s Shi Yuqi, who led 17-12 in the third before losing nine of the next 11 points to fall to a 21-19, 6-21, 21-19 defeat.

Awaiting Wei in the quarter-finals is Thailand’s Tanongsak Saensomboonsuk, a 12-21, 21-17,21-14 victor at the expense of Chinese Taipei’s Hsueh Hsuan Yi.

Hong Kong suffered a setback as number six seed Ng Ka Long An lost 21-12, 21-10 against China’s Qiao Bin.

Lin Yu-hsien won an all-Taiwanese encounter with Yang Chih Chieh 18-21, 21-14, 21-17 to set up a meeting with Qiao, while number 13 seed Iskandar Zulkarnain Zainuddin beat Daren Liew 23-21, 19-21, 23-21 in a battle of two Malaysians.

Top seed Wang Shixian was one of four Chinese to make the women’s singles quarter-finals but was made to work hard by South Korea’s Kim Na Young on her way to a 21-11, 19-21, 21-12 win.

Her next opponent is compatriot Chen Yufei, who upset sixth seed Busanan Ongbumrungpan of Thailand courtesy of a 21-18, 21-18 triumph.

Completing the quartet of Chinese quarter-finalists is He Bingjiao and Sun Yu after they overcame Hong Kong's Yip Pui Yin - 19-21, 21-18, 21-14 - and Indonesia’s Hana Ramadhini - 21-5, 21-6 - respectively.

Home favourite Tai Tzu-ying, the number two seed, was comfortable in defeating Chinese youngster Gao Fangjie 21-15, 21-11.