The key is to look at your writing skills and eloquence.
3. Science and liberal arts are separated, and schools generally stipulate how much science and liberal arts should recruit, so science students compete with science students. Liberal arts students recruit more and science students take fewer exams, so they are basically flat.
In terms of culture, each school is different, but the director has higher requirements for culture than other art candidates. It is about 100 to 150 lower than the average examinee.
4. Find training courses, which are available in most cities. If you are good at writing and eloquence, you can also buy self-help books. There is a material called "Training Manual for College Entrance Examination for Directors", which is used in many training courses.