The knowledge points to be examined should be similar. I just did the Sichuan and Chongqing papers on science and mathematics in 2008. I think the topic of Chongqing Paper is flexible and novel, but it is not too difficult. My self-test score is 138, while Sichuan paper is more traditional, and the difficulty is not much different from Chongqing paper. My self-test score is 135. Chongqing's finale is a series, which belongs to the middle and high level, and requires that the general term must use the characteristic equation, while Sichuan's finale is a function derivative, which belongs to the middle level, and can only be solved by correct derivation and certain drawing ability. The contents of other surveys are similar, and the structure of questions is generally the same, so even if you change the regional exam, it will not have much impact. Just review those key points.