Over the past three years, the emergence of a new coronary epidemic has disrupted the global order and, at the same time, has made the epidemic a constant life for people. There is a wealth of data indicating that new coronal infections are respiratory diseases, which are further infected in the body through the use of inhalation, oral and eye-breeding. How to avoid high-capacity infections and to achieve low-capacity infection or non-infection is key to personal protection. In the latest ver...