Online learning is no longer a strange thing in the current pandemic. However, there are still advantages and disadvantages of online learning. What is its advantage? The advantage is that it is easiest to help students maintain knowledge during the epidemic season. As for the leadership issue, it is possible for delegates to meet and talk without having to meet face-to-face. However, it still has some weaknesses such as many disadvantaged, poor students often do not have equipment or internet to study and are often dropped out due to weak transmission lines. Suitable applications such as Zoom, ... will often be difficult to use for people who do not know about information technology. It also needs improvement in some points such as: launching a feature that allows meetings without internet and fixing existing bugs such as: can't turn on the camera, broken mic, ...
