Winter vacation should be dominated by "clock in"?

Winter vacation should be dominated by “clock in”?

Winter break, which is supposed to be a time for students and teachers to recuperate, is becoming an important time for overtaking in corners. What is more frightening is that with the development and use of various mobile phone APPs, every minute and second of contemporary students' life has been supervised and controlled. They have no freedom, no flexibility, no self, become depressed and...