Generally speaking, this will be very practical for Xiao Bai who has just participated in the training. After all, if a platform is relatively large, at least it is guaranteed to charge tuition fees and then return them. Take advantage of students' greed and cheap psychology and the psychology of Bai Piao course to recruit students. Among them, various obstacles will be set up for you in the process of customs clearance. For example, a day of absenteeism means that you didn't finish your homework as required or didn't follow the agreement. These restrictions determine that the possibility of your customs clearance is extremely low.