No, students go home and watch the explanation videos themselves. At most, they review after class, which gives them a higher degree of freedom. Now, the definition of making up lessons is to make up a certain amount of knowledge for students within a specified time. If you watch the video, you can watch it at any time. If you can't watch it, you can pause and watch it later. It is not a remedial course in the strict sense.

Make-up class refers to the activity process that students need to make up classes after they miss classes due to sick leave, personal leave or public holidays.

Make-up lessons refer to the process that students find teachers to teach with pay when their academic performance in normal classes does not reach the ideal level, but most of them are compulsory by the Education Bureau or schools. Make-up lessons also refer to the phenomenon that some schools add 1 to 2 classes after school in order to increase the main class time.