Is the paper of Henan University and Zhengzhou University revised by the same person?
Not necessarily. Test papers are not graded uniformly, by region and province. The place where the test paper is graded depends on where you apply for the school, so it is not necessarily. For example, if you register in Beijing and apply for a school in Shanghai, your examination place is in Beijing, but your papers for public courses and professional courses are marked in Shanghai.