How to wear a mask correctly?
(1) The dark side is facing outward, and the light side is facing the face.
(2) The part with the metal strip is above the mask.
(3) After clearly distinguishing the front, back, upper and lower sides of the mask, wash your hands first to determine whether the mask is correct, and hang the cords on both ends on your ears.
(4) The last step is also the metal strip problem mentioned above. After wearing the mask, you need to use both hands to press the metal strips on both sides of the nose bridge to make the upper end of the mask close to the nose bridge, and then stretch the mask down to make the mask No wrinkles are left, it is best to cover the nose and mouth.