First of all, it should be Beijing and Shanghai, because Beijing is the imperial city. You only need more than 500 points in the college entrance examination to be admitted to Tsinghua Peking University, and so does Shanghai. You only need to get more than 500 points to get into Fudan. In addition, these two cities are developed, with high education level and teaching quality among the best in the country. So it is easy.

There are also some provinces in the northwest and southwest, such as Qinghai, Xinjiang, Tibet, Guizhou and Guangxi. The college entrance examination in these provinces is also very easy, because the teaching conditions in these places are not so good, because it is a poor area with few people and mostly ethnic minorities, and the natural college entrance examination scores are not so high, so the college entrance examination is very easy.

I hope I can help you.