The new year is rung in with a big festival on the first market day after the Chinese New Year.
The festival is actually on the first market day after chunjie, but probably not right on the day after. Check before going. See http://news.sina.com.cn/s/2008-02-11/094613399569s.shtml and http://www.yxes.gov.cn/mainphp/forum.php?mod=viewthread&tid=21037