World No. 1 Lee Chong Wei will be out for up to a month after tearing an ankle tendon at the Thomas Cup Tuesday, seriously denting the Malaysian star's bid for a first Olympic gold medal. Lee landed awkwardly just moments into the first match of a group tie against Denmark and was taken to hospital for what was confirmed later as a torn ankle tendon as Malaysia lost 3-2 in Wuhan. The player would return early Wednesday morning to Malaysia for another MRI scan. In the evening tie, home favorite China romped to victory against Indonesia 5-0, with Lee's arch-rival Lin Dan looking sharp against Simon Santoso, beating the world No. 9 21-10 21-17. In the men's Thomas Cup, China qualified with Indonesia from Group A for the knockout stages, with the top two teams from each of the three-team groups progressing. Despite losing the tie against Denmark, Malaysia has also advanced. Malaysia's 33rd-ranked Daren Liew gave his country a glimmer of hope after the Lee injury blow when he pulled off a surprise 21-15, 21-13 victory over world No. 13 Jan O Jorgensen, but the Danes were too strong in the doubles. In the other Thomas Cup ties South Korea won a close encounter with Germany 3-2, with both nations going through to the knockouts, while Japan eased past Russia 5-0. In the women's Uber Cup, China also played Indonesia and made equally light work of its usually powerful opponents, 5-0. In the Thomas Cup, China will play Malaysia, Japan faces Indonesia, Denmark is up against Russia and South Korea takes on Germany. In the Uber Cup, China plays Germany, Thailand faces Denmark, Taiwan takes on South Korea and Indonesia plays Japan.