China is the first country in the world to use masks. In ancient times, people in the court began to cover their mouths and noses with silk scarves in order to prevent dust and breath pollution. For example, in the book of rites, it said, "cover your mouth, and be afraid of touching people." "Mencius, from Lou" record: "the West son is unclean, then people all hide their noses and pass." It's not sanitary to cover your nose with your hands or sleeves, and it's not convenient to do other things. Later, someone used a piece of silk cloth to cover your mouth and nose. In his travels of Marco Polo, Marco Polo recorded his experiences of 17 years living in China. One of them: "in the palace of the Yuan Dynasty, all the people who offered food covered their mouths and noses with silk cloth, so that they could breathe without touching the food." This kind of silk cloth covering the mouth and nose is the original mask.
At the beginning of the 13th century, masks only appeared in the Chinese court. In order to prevent their breath from spreading to the emperor's food, the waiter used a kind of silk and gold thread cloth to make a mask

The invention and origin of mask
At the end of the 19th century, masks began to be used in the field of medical care. German pathologist ledge began to recommend gauze masks for medical staff to prevent bacterial infection
At the beginning of the 20th century, masks became necessary for public life for the first time. The Spanish flu that has swept the world has killed about 50 million people, and ordinary people have been asked to use masks to fight the virus.

The invention and origin of mask
In the middle and late 20th century, masks were frequently used in large scale. Masks have played an important role in preventing and blocking the spread of pathogens for several times.
In March 1897, medge, a German, introduced a method of wrapping the nose and mouth with gauze to prevent the invasion of bacteria. Later, someone made a six layer gauze mask, sewed it on the collar, and turned it over to cover the nose and mouth. However, this kind of mask always needs to be pressed by hand, which is extremely inconvenient. Later, someone came up with a way to tie the tape to the ear, which became the mask that people often use today.
In 1910, the plague broke out in Harbin, China. At that time, Dr. Wu Liande, Deputy Supervisor of Beiyang Army Medical College, invented the "Wu's mask".
In 2003, the use and popularization of masks reached a new climax. A "SARS" almost made masks out of stock at one time. There was a long line in front of every drugstore, and people rushed to buy masks.

The invention and origin of mask
In 2009, after the "bird flu" in 2004, the "A H1N1 flu" made the mask army appear in front of the world's major news media again.
In 2013, the emergence of PM2.5 air hazard concept caused the public to pay attention to air pollution, making masks and other protective equipment very popular during the haze weather.
On February 7, 2020, in the disinfection supply center of the Second Affiliated Hospital of Xi'an Jiaotong University, more than 30 medical staff and volunteers began to make masks with materials such as medical packaging non-woven fabric, equipment absorbent paper, N95 melt blown filter cloth, etc.