In 20 16, all 26 provinces, municipalities and autonomous regions will adopt national unified examination papers, and only 6 provinces and cities (Beijing, Shanghai, Zhejiang, Jiangsu, Tianjin and Shandong) will not adopt national unified examination papers. The national volume is more difficult than the provincial volume, which can be seen from the relatively low scores of provinces and cities that adopt the national volume. The national examination paper is good for top candidates, but bad for middle-class candidates.