Four bullets. Four rounds of math review and content for Changsha senior high school entrance examination. The first round of math review begins in winter vacation. The main content of the review is the test sites required in most senior high school entrance examination outlines: triangle, quadrilateral, circle, equation and inequality, linear function, inverse proportional function, quadratic function, etc. The first nine classes in spring class are the second round of review. This round of review focuses on various common senior high school entrance examination questions, including the existence of function pixels, the movement and transformation of graphics, the comprehensive application of algebra, geometric transformation and inquiry questions, and error-prone questions. The third round of review will be held in the last three classes of the spring class. Algebraic synthesis, geometric synthesis and algebraic synthesis will be the main review objects of this round of review. After the first and second modules, the fourth round of review came quietly. This round of review may be presented in the form of a short class. By analyzing the trend of senior high school entrance examination reflected by two rounds of review, we can choose topics and predict the senior high school entrance examination.