XIAMEN, China - Defending champion China, along with Thailand, South Korea, and Chinese Taipei, secured early passage to the Sudirman Cup knockout stages after dominating their first two group matches on Monday.

In Group A, China rotated its lineup against Hong Kong, resting all starters except men's singles star Shi Yuqi. Shi endured a grueling battle with Lee Cheuk-yiu, dropping the second set before rallying to win the decider 21-12. The host nation ultimately prevailed 5-0.

"I was completely gassed in the second game," admitted Shi. "I had to keep reminding myself to fight for every point."

Thailand joined China in advancing after blanking African champions Algeria 5-0. The two teams will clash Wednesday to determine the group winner.

In Group B, four-time champion South Korea overcame another men's singles stumble to defeat Canada 4-1, while Chinese Taipei cruised past the Czech Republic 5-0. Both teams secured quarterfinal spots.

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In Group C, Japan and Malaysia both won their first group matches with 5-0 victories over Australia and France respectively.