The first diagnosis of Chongqing is city ranking. According to relevant public information, there are three main types of examination papers: one is the joint examination of eight schools and schools outside the city; the other is the joint examination of six districts, including Yuzhong District, Jiulongpo District, Beibei District, Shapingba District, Jiangbei District and Nan 'an District, which are participated by teachers of Chongqing Academy of Educational Sciences; and the third is the Kant's examination paper put forward by frontline teachers such as Chongqing No.1 Middle School, Nankai Middle School, Chongqing No.8 Middle School and Bashu Middle School.