1. Understand the regulations and requirements: You need to understand the regulations and requirements of the library of Henan University of Technology, including the relevant regulations of the entrance examination and the re-examination policy. Information can be obtained through the library official website, related literature or consulting library staff.

2. Apply for retake: If you fail the entrance exam, applying for retake is an option. You can contact the relevant departments of the library or the staff responsible for library entrance education and put forward the requirements and reasons. I will inform you of the specific requirements and procedures for retaking the exam.