If you wash your hands incorrectly, you have not washed them. When most people wash their hands, they simply rub their palms and backs of their hands quickly and easily. Especially at the time when the new coronavirus is rampant, washing hands is particularly important.

During the ravages of the new coronavirus, masks have become a necessary protection product for everyone to go out, but masks have positive and negative points. What will happen if the masks are worn reversed?