China was the first country in the world to use masks.
In ancient times, in order to prevent dust and breath pollution, people in the court began to cover their mouths and noses with silk scarves.
"Mencius · From Low" record :" Xi Zi is unclean, then people all cover their noses and pass.
It was very unhygienic to cover one's nose with one's hands or sleeves, and it was not convenient to do other things. Later, some people used a piece of silk cloth to cover their nose and mouth.
In his book The Travels of Marco Polo, Marco Polo described his experiences of living in China for seventeen years.
One of them said, "In the palace of the Yuan Dynasty, every one who offered food covered his mouth and nose with silk cloth so that his breath would not touch his food."
The silk cloth covering the mouth and nose is the original mask.
At the beginning of the 13th century, masks appeared only in Chinese courts.
To prevent their breath from reaching the emperor's food, the waiters used a silk and gold thread cloth to make masks
Masks began to be used in medical care at the end of the 19th century.
German pathologist Lederch began advising health care workers to use gauze masks to prevent bacterial infections
At the beginning of the 20th century, masks first became a necessity in public life.
As the Spanish flu swept the world, killing an estimated 50 million people, ordinary people were asked to wear masks to protect themselves from the virus.
In the middle and late 20th century, masks were frequently used on a large scale.
Masks have played an important role in preventing and blocking the spread of germs during several influenza pandemics in history.
In March 1897, German Medici introduced a method of covering the mouth and nose with gauze to prevent the invasion of bacteria.
Later, someone made a mask with six layers of gauze, which was sewn onto the collar and used by turning it over to cover the mouth and nose.
However, the mask has to be held down all the time, which is extremely inconvenient.
Then someone came up with a way to tie a strap around the ear, and it became the mask that people use today.
In 1910, when the plague broke out in Harbin, China, Dr. Wu Liande, then deputy superintendent of Beiyang Army Medical College, invented the "Wu mask".
In 2003, the use and popularization of masks reached a new climax. The SARS epidemic almost made masks sold out for a time. There were long queues in front of major drugstores and people rushed to buy masks.
In 2009, after the 2004 "bird flu" pandemic, the H1N1 flu brought an army of masks to the world's news media once again.
The emergence of the concept of PM2.5 air hazards in 2013 drew public attention to air pollution, making masks and other protective products popular during hazy days.
On February 7, 2020, more than 30 medical workers and volunteers in the Disinfection and Supply Center of the Second Affiliated Hospital of Xi 'an Jiaotong University made masks using materials such as non-woven cloth in medical packaging, absorbent paper and N95 melting spray filter cloth for instruments.