The first stage: The three universities with A+ rating are Peking University, Tsinghua University and China University of Science and Technology. The chemistry of Peking University has been recognized by many institutions and rankings in the world, and both QS and ESI have given a very high evaluation of the chemistry of Peking University. Of course, the chemistry major in Tsinghua is also recognized. In addition, the international recognition of chemistry in China University of Science and Technology may be slightly weaker than that in Peking University Tsinghua, but overall, the evaluation is very high, and all scientific indicators are also very high.

The second stage: The four A-level universities are Nankai University, Jilin University, Fudan University and Xiamen University. The four universities at this stage may have caused a lot of controversy. After all, there is still a big gap between the comprehensive scientific data and indicators of these universities and Tsinghua Peking University, especially Xiamen University. Although it has developed well in recent years, on the whole, the scientific research level of Xiamen University is still better than its own reputation. Of course, the Ministry of Education rated Xiamen University as a chemistry subject.