XIAMEN,May 1 — Hosts and defending Sudirman Cup champions China topped their group with a 4-1 win over Thailand while South Korea did likewise after they defeated Taiwan by the same score at the biennial mixed team competition yesterday.

Hong Kong and Canada were already out of contention for the quarter-finals but both sides ended their campaigns on a high with victories.

China, seeking a record-extending 14th title, and Thailand were already through to the knockout stage but it was the champions who wrapped up Group A with three wins from three.

Wei Yaxin and Feng Yanzhe put China ahead with a 23-21 21-11 win in their mixed doubles match, and they looked in control after Li Shifeng won the men’s singles rubber 21-18 17-21 21-13.

Thailand rallied, and China lost their first match of the competition when women’s world number two Wang Zhiyi was defeated 21-19 13-21 23-21 by Ratchanok Intanon but China sealed the win with victory in the men’s doubles.