1. Fierce competition: As both Vocational College and South China Normal University are well-known universities with high educational quality and academic level, they attract a large number of outstanding students to apply for the exam, and the competition is fierce.

2. High admission scores: The admission scores of vocational colleges and South China Normal University are usually relatively high, and you need to have high comprehensive quality and learning ability to be admitted to these two schools.

3. The examination is difficult: the examinations in vocational colleges and South China Normal University are difficult, requiring students to have a solid cultural foundation and high comprehensive quality.

4. Less enrollment plan: Due to the limited enrollment plan of the school, the number of students enrolled each year is small, which also increases the difficulty of the exam.