At the beginning of the 13th century, masks only appeared in the Chinese court. To prevent his breath from spreading to the emperor’s food, the waiter used a silk and golden thread to make a mask.
At the end of the 19th century, masks began to be used in the field of medical care. German pathologist Ledersch began to advise medical staff to use gauze masks to prevent bacterial infections
At the beginning of the 20th century, masks became a must-have for the public for the first time. The Spanish flu that swept the world killed about 50 million people, and the general population was required to use masks to protect against the virus.
In the middle and late 20th century, the number of large-scale use of masks was obviously frequent. In the historical pandemics, masks have played an important role in preventing and blocking the spread of germs several times.