1. Inside the university: Many universities will set up Band 4 for students to take the exam. This way is very convenient, the examination room is located in the school, which reduces the traffic pressure of candidates.

2. Professional institutions: Some specialized English training institutions or examination institutions will also provide four-level registration services. The advantage of this method is that it can better provide exam counseling.

3. Public places: Level 4 is permanently located in public places, such as exhibition centers and public libraries, which are relatively quiet and convenient for examination management.