According to the query data, the teacher will be closed from the publication of the paper to the end of the college entrance examination. The closing time is roughly one month from the end of April to the end of the college entrance examination every year.

There are three main types of proposition experts in college entrance examination papers: professors, in-service teachers and subject teaching and research personnel. The proportion of the three is decreasing, that is, university professors account for the largest proportion, and the general proposition leader is a university professor.