The fourth summer vacation in Cixi is held from 7: 31 a.m. to 4: 31 p.m. every day from Monday to Friday, because the notice issued by Cixi Education Bureau on doing a good job in the summer vacation custody service for students in the compulsory education stage in 2122 shows that the fourth summer vacation in Cixi is held from 7: 31 a.m. to 4: 31 p.m. every day from Monday to Friday, and it is clear that the student custody must adhere to the principle of voluntary parents and students.