Once a week. Official website of Cheng 'an Vocational Education Center shows that the holiday of Cheng 'an Vocational Education Center is once a week, with a total of two days on Saturday and Sunday. Those who are close to school can go home once a week, and the number of times they go home far from home depends on the specific situation. Cheng 'an Vocational Education Center was established in 1957, sponsored by Cheng 'an County People's Government and headed by Cheng 'an County Education and Sports Bureau. It is a national key secondary vocational education school integrating specialty, vocational high school and training.