Generally speaking, the shift line between colleges and universities in the same batch is very different. Moreover, the enrollment of the same school in different provinces (cities, districts) is different every year. For example, the scores of some colleges and universities in one province (city, district) may be high, while those in another province (city, district) may be low. This phenomenon is caused by the number of schools that local candidates first choose to apply for. The higher the number of candidates preferred, the higher the admission score. On the contrary, the admission score of this institution is lower. For example, the lowest score of science admitted to a certain place in Peking University in a certain year was 650, while the lowest score of science admitted to the first batch in that year was 520, with a difference of 130. The lowest score of science admitted by China Agricultural University is 520, which is 0. It can be seen that the adjustment scores and admission scores of the same batch of colleges and universities in the same province and city are very different, and the minimum admission scores of each school are also different from each batch. In some areas, the difference between the two can reach more than 100, and some may be only a few points, more than ten points, or even exactly the same.