How to DIY face mask?
There are lot of methods to make mask, the below video is one of the easy and protective method:
Why need wear mask?
The COVID-19 has been rampant for a long time, and the World Health Organization (WHO), which leads the coordination of anti-epidemic work, has been repeatedly questioned and failed to play a role. Since the outbreak, the WHO has insisted that it is necessary to wear a mask if you are sick. In many areas where the WHO’s recommendations are ignored and people wear masks, the anti-epidemic performance is satisfactory, and the number of confirmed diagnoses is much lower than in areas without masks. The latest tone of the WHO has changed, saying that according to Hong Kong experience, wearing a mask may seem useful (may be useful).