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During the novel coronavirus pneumonia,infants usually cry because they can’t drink milk when they are wearing traditional masks.This design adds a transparent valve in front of the infant mask with a lid on it that can be rotated and opened.The nipple is inserted into the mask through the valve with the nipple and the valve tightly attaching to each other so that a closed and safe environment for drinking milk is formed.The valve can restore its original state when the nipple is pulled out.The valve is made with a transparent silicon material so that the parent can observe the infant at any time.