Liaoning University has strict invigilation for Band 4 and Band 6. Equipped with two teachers, monitoring in the classroom, monitoring the whole process, and no small moves are allowed in the exam. CET-4 and CET-6 are one of the important ways to select talents in China. Millions of students take exams every year, and the position of invigilators as candidates is particularly important. In order to keep the exam fair, serious and safe, invigilators need to conscientiously perform their duties and ensure the rights and interests of each candidate.