Mandarin jacket is a traditional male costume in Qing Dynasty. Jackets were originally worn by Manchu people when riding horses. It has a stand collar, a pair of lapels, flat sleeve ends, waist-length and five buttons in front. The jacket was originally a "professional suit" jacket in the Qing Dynasty (the jacket of men's formal "robe and gown" was longer, even lower than the short jacket), and then gradually became a casual suit for everyday wear. It was upgraded to a formal suit in the Republic of China, with black fabric, dark patterns and no colorful embroidery patterns. A double-breasted jacket worn by men over their robes in the old days. A jacket is a sleeveless coat, which is different from a sleeveless vest. There are three kinds of lapels: large lapels, double lapels and pipa lapels. General length to navel, sleeves to elbow.