In ancient times, each dynasty had its own five elements. During the Spring and Autumn Period and the Warring States Period, Zou Yan divided the land of China into five parts: water, fire and soil in Jin Mu. According to the theory that the five elements are mutually generated, the Ming Dynasty is the fire attribute of the five elements, so Huang Taiji designated the Chao number as Qing, because it means water and water to extinguish fire. Therefore, the clothes of nobles and officials in the Qing Dynasty were mostly black or blue, because these colors were all water in the five elements. In fact, not only the clothes of nobles and officials have regulations, but also the clothes of concubines and civilians have clear requirements. However, there are no specific rules for which color you want to wear, and it doesn't matter if you mix them together.

Strictly speaking, there is no rule that eunuchs' clothes must be red. For example, those eunuchs who serve the emperor wear gaudy and beautiful silks and satins, that is, the so-called royal eunuchs with higher grades, while those eunuchs who are in charge of some daily life and serve tea and messages at lower levels can only wear the simplest cloth and so on.

Since Yongzheng, the grade of eunuchs has been continuously improved. By Cixi, the grade of eunuchs reached its peak, that is, second-class ministers like Li wore red hats and yellow coats when they went out to do business. The lower the grade, the darker the color of the clothes, and the patterns on them range from cranes and phoenixes to peacocks. The lowest grade can only be plain cloth. You should know that the dragon pattern can only be exclusive to the emperor, and God favors it. In short, during the Qing Dynasty, there were no strict rules about the difference between the clothes of officials and eunuchs, but ministers all wore blue official clothes to court, which made them more formal and solemn.