In the era of the Yellow Emperor in ancient China, with the development of agriculture, plant fibers were used to spin and weave silks, that is, to divide coats and skirts. At that time, men and women didn't wear underwear, only skirts, like skirts. In the Zhou dynasty, Qiu was called a shin garment, and the material was not silk. Unlike later Qiu Zi, it only has two pairs of thigh parts, with trouser legs below the knee to keep out the cold. In the Han Dynasty, the shin garment extended below the knee, which was called "knee covering". Many people think that "knee pads" are the embryonic form of underwear, and their main function is to keep warm.

Because pants also have the function of keeping warm, for a long time, China did not clearly distinguish between underwear and pants. Pants appeared in China before the Han Dynasty, which are open-crotch pants, that is, although there are crotch, the crotch is not stitched, which is convenient for urination. There is another advantage. When a man wants to pat his ass with his palm in court, he just needs to wrap his body with his palm and expose his buttocks, and he can be punished. If you have crotch, it is not convenient to take off his pants in court. When Emperor Zhao of Han Dynasty arrived in Shangguan, women began to wear pants with crotch, which were called "poor pants". This kind of trousers was called "crotch" in the Tang Dynasty, and the crotch was sewed and tied to keep it from opening, so as to drown it privately and prevent women from raping. In the Song Dynasty, people in China made a clear distinction between trousers and underwear. In the Notes of the Old Learning Temple, they said: "Soap embroidered on the inner abdomen (that is, abdominal pocket) and trousers not woven are regarded as lewd clothes." It can be proved that in the Song Dynasty, women began to wear underwear in addition to their bellies. Since then, China underwear has continued to develop. But underwear in the real modern sense still comes from the west.

The Development of Western Men's Underwear

Underwear appeared in the west in the13rd century, and its English name is Braies. Braies is Saxon, which means pocket-shaped loose underwear, knee-length, made of linen, tied with a rope at the waist, worn by kings and farmers. In the Renaissance, the underpants became shorter and the front was open, so that men didn't have to take off their underpants when urinating. The ruffled placket is buttoned or fastened with a rope, which has become the embryonic form of modern men's trousers. At that time, men did not wear underpants, but put tights on them and fixed them with garters, so Henry VIII padded the crotch of the underpants. Historians speculate that he may have hidden a bandage soaked in medicine in his crotch to relieve the pain caused by syphilis. Many men regard underwear placket as a convenient pocket, which contains drugs and money for treating sexually transmitted diseases. In the Tudor era in England, men's underwear became stable and simple, knee-length, buttons nailed in front, and cotton and silk were used as fabrics in addition to linen. Gradually evolved into a jumpsuit, and the jumpsuit developed into an ankle-length tights. /kloc-John Suliva, a boxer in the 0/9th century, loves to wear tight underpants to fight, so this kind of long underpants is also called "John". 1935, Jockey sold the world's first briefs with Y-shaped stitching on the front in Chicago. Underwear makes the exposed area of men's legs reach the limit, and clothing historians think it is as meaningful as a bra. In three months, the United States sold 30,000 newsletters. Jockey Company urgently produced the "Masculine" series and sent it to shopping malls all over the United States by plane. The competition between boxers and briefs began, and both sides claimed that they were healthier and more comfortable to wear. During this period, underwear was sewn with elastic bands, and the word "underwear" was in the dictionary. The popularity of briefs caters to health needs. If some men don't wear underwear, then the testicles are always hanging, which is prone to varicose veins. Because briefs cling to the body, it is easier to form a protective effect. After the end of World War II, men's underwear has colors and patterns, rayon, polyester, lycra and other emerging fabrics have increased the tightness and elasticity of underwear, and the style of briefs has become more concise. Since then, underwear has become a fashion, and all kinds of underwear have been refurbished and constantly appeared on the runway. Men's underwear was originally designed to highlight practicality and health. The fashion industry and gay men have endowed the men's market with colorful styles, including thongs and low-waisted briefs. In 1990s, Kate Moss and the rock star March Mark filmed a severely criticized underwear ads for Calvin Klein. Marchmark was topless and hugged Moss, who was wearing only a pair of underwear. The elastic band edge of white underwear is exposed at the waist of his jeans, and the brand logo on it is clearly visible. At this point, underwear has moved from "behind the scenes" to "front desk" and become an ornament that highlights personality.