T-shirts are one of people's favorite clothes in spring and summer, especially in the hot summer when the heat is unbearable. With its natural, comfortable, unique and solemn feeling, T-shirts have gradually replaced the pattern of men wearing vests or undershirts and short-sleeved or Hong Kong-style shirts in social occasions, and become seasonal clothes that people are happy to wear. At present, it has become a fashion that men, women and children all over the world love to wear. It is said that the global annual sales volume has reached several billion pieces, which together with jeans constitute the most popular and commonly worn clothing in the world.