The Covid-19 pandemic reminds us of Ebola and SARS because its consequences are really unpredictable. It caused shops to close, traffic was blocked, the economy fell into a state of instability, ... and along with that, students were not allowed to go to school - one of the worrying things. Best. Some people think that leaving students out of school for too long will cause knowledge gaps, but there are also opinions that agree for the general health of the community. In fact, letting students leave school is an inevitable thing to do in the stressful epidemic situation and each individual needs to have a sense of self-study. Whether we can secure knowledge or not completely depends on the sense of self-study because even if we go to school but we are lazy and lazy, it is completely ineffective, even the epidemic is contagious and difficult. control. Let's consider this as an "opportunity" for ourselves to synthesize and review our knowledge during the past learning process. Currently, the Department of Education and Training has organized a training program on television, We can completely equip ourselves with knowledge at home. Self-study is also a good measure for us to repel the epidemic, reduce and limit the risk of virus spreading. "Optimistic people will see opportunities in challenges, will see advantages in even difficulties. So let's take the time to learn and practice by ourselves, and join hands to fight the epidemic.