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In page Wu Xuanyi:

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On December 4, 2015, Starship Entertainment and Yuehua Entertainment introduced a 12-member Chinese-South Korean girl group WJSN. Wu was introduced as a member of "Joy Unit". Together with Wonder Unit, they released a Christmas cover of "All I Want For Christmas Is You". WJSN officially debuted in February 2016 with their mini album Would You Like? with "MoMoMo" and "Catch Me" as the two lead singles.[citation needed]