Since 1998, the "Chinese Wushu Association" together with the "National Sport Commission" and the "Chinese Wushu Research Institute" has established a graduation system based on nine Duan levels. In 2011 the Duan Wei system was changed and a set of style books was issued for duan wei 1-6 exams each level can be examined on preset forms and applications including partner forms the badge has also been changed to include the duan wei number i.e. 1–6. Entry level for experienced practitioners has now been limited to 3rd Duan and below so as to tighten up the rankings.