Why is it a summer vacation trip abroad?

Dredge summer passenger flow. Summer vacation is the peak of passenger flow. The reason to count the number of people traveling abroad in summer vacation is to determine the approximate number, which can effectively guide the summer passenger flow. For example, according to the actual situation, extend the opening hours of the entry-exit hall, further strengthen the police force and security personnel, and ensure the smooth and efficient customs clearance of the majority of passengers.