Journal impact factor is a relative number. At present, the highest impact factor in China is 10.526.

Supplementary information: Impact factor is a calculation method of journal influence, that is, the total number of cited papers published in the first two years of a journal in a statistical year divided by the total number of papers published in the previous two years. The impact factor index is a relative statistical value, which can overcome the deviation caused by the different amount of articles published in large and small journals. Generally speaking, the greater the influence factor, the greater its academic influence. Generally speaking, the higher the impact factor, the greater the influence of the journal. But the judgment of influencing factors is not absolutely objective. The impact factors of journals corresponding to different majors are very different, and the impact factors of comprehensive journals and professional journals are also very different. For example, comprehensive journals, because they are large categories and have a wide range of research fields, have high citation rate and high impact factors; However, the relatively small category of unpopular major has a low citation rate because there are few people studying it.