正確的洗手 Các bước vệ sinh đúng cách
https://www.youtube.com/watch?v=ItZA_aADhzQ
如何戴口罩正確 Đeo khẩu trang đúng cách
https://www.youtube.com/watch?v=A7b7JzFR2yI
https://www.youtube.com/watch?v=Bvr6gpFtulo&list=PLSHckwvN6OpI_TmMeDyrN-QL0tg4UkVmD&index=15&t=0s
https://www.youtube.com/watch?v=XZI1hnCB_bc&list=PLSHckwvN6OpI_TmMeDyrN-QL0tg4UkVmD&index=18