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The correct way to wear a mask

1. Preparation: Wash your hands before wearing a mask.
2. Know the mask: judge the inner and outer layers through the folded layer of the mask, and the outward facing side of the folded layer is the outer layer of the mask.
3. How to wear: Use both hands to press the metal strips on both sides of the bridge of the nose so that the upper end of the mask is close to the bridge of the nose, and stretch the mask downwards so that the mask does not leave folds.