Why are the costumes of the Tang Dynasty called Tang Zhuang in history?

In today's situation, what kind of clothes can be called Tang suit? In fact, the Tang suit evolved from the coat of the Qing Dynasty, and its style and structure have four characteristics: one is the open collar at the front center of the coat, the other is the sleeve, that is, there is no seam between the sleeve and the clothes, and the main feature is plane cutting; Third, it is a pair of lapels, or it can be an oblique lapel; The fourth type is the right-angle buckle, that is, the buckle, which consists of two parts: the knot and the buckle. In addition, in terms of fabrics, brocade fabrics are the main ones.

Today's Tang costume is no longer the costume of the Tang Dynasty. Wotou Shahat and T-shirt are the most important clothes for men in Tang Dynasty. Wotou is a kind of black cloth in Baotou. The Tang Dynasty was a time when "writing head" prevailed, and the style of "Shantou" was also full of changes, especially during the more than 100 years from the early years of Tang Wude to Kaiyuan, the shape of "Shantou" experienced several major changes. Men's wear in the Tang Dynasty was mainly round neck robes. Traditional crown clothes are only used occasionally on grand occasions, such as ancestor worship and ancestral halls. Others give priority to "hoeing robe shirts". Robes are widely used, from emperors to officials, and can be worn at ceremonies and banquets, and even used as court clothes. The robes in different periods have different styles. The sleeves of early robes were mostly big sleeves, but big sleeves were not suitable for overseas nationalities. Because of the cold in the north, it is not convenient to use large sleeves, but narrow sleeves that tightly wrap the arms. With the mutual penetration of customs and habits between the north and the south, this tight-fitting and narrow-sleeved robe style was also accepted by the Han people and became the representative of the robe style in the Tang Dynasty.