In ancient China, Han and Tang Dynasties, Liao, Jin, Xixia and other Han Dynasties all had distinct hierarchical characteristics. Cheng Tang overthrew the Xia Dynasty and established the Shang Dynasty, which is the golden rule. The corresponding gold color is white, so the Shang Dynasty is still white. King Wu attacked the Zhou Dynasty and established it. The Zhou Dynasty was fire gold, and the color corresponding to fire was red. Therefore, the Zhou Dynasty was the Hod Dynasty, so the emperors of the Song Dynasty needed to wear red robes.

This is because red has been regarded as a positive and noble color in China since ancient times, which can ward off evil spirits. Ancient nobles like to use red as clothes, such as wedding clothes, and write robes in red ink to ward off evil spirits. But in the Spring and Autumn Period, nobles liked to use purple as their clothes. Confucius believes that purple is a variegated color, and evil replaces righteousness.

The emperor's robes are embroidered with dragon-shaped patterns, the emperor's dresses and the emperor's robes. Also known as the dragon robe. Because the robe is embroidered with dragon patterns, it is named. It is characterized by a collar, a right collar and yellow. In addition, the dragon robe also refers to the dragon clothes worn by ancient emperors. In the Han Dynasty, the Western Han Dynasty was virtuous and the Eastern Han Dynasty was virtuous, but the Han Dynasty inherited the system of the Qin Dynasty, so the coronation ceremony of Emperor Xian of Han Dynasty was mostly red and black, which looked extremely solemn and generous.

However, the emperor of the Song Dynasty thought that this was not enough to show the majesty of the emperor, and it was very complicated to wear, because the Song Dynasty advocated "elegance and simplicity". Different from the noble and gorgeous temperament of the Tang Dynasty, it can be closer to the masses, and the emperor of the Song Dynasty thinks it can also be close to officials. To strengthen the relationship between officials and achieve the role of being close to the people, this kind of clothing is second only to the coronation suit.