There is a conspicuous jade bead on the top of the official's hat, which is red, blue, transparent and opaque. Some are not jade beads, but a golden pimple. These are the so-called "tops", symbols of different levels of officials in the Qing Dynasty, and also a major symbol on the hat.

Official hats in Qing Dynasty can be divided into winter and summer. In summer, they are called cool hats, which look like a small umbrella. In winter, they are called warm hats. There is a circle around the dome diagonally above. Whether it is a cool hat or a warm hat, this "top" is indispensable on the dome. What level of officials and what materials are used to be the "number one scholar" are very particular.

According to the regulations of the Qing Dynasty, the first official crown is ruby, the second official crown is red coral, the third official crown is sapphire, the fourth official crown is lapis lazuli, the fifth official crown is crystal, the sixth official crown is lapis lazuli, and the seventh, eighth and ninth official crowns are all gold. The difference is that the seventh level is a plain gold top, that is, there is no pattern, while the eighth level of gold top is engraved with patterns on the shade. One product and two products are all red, and red is a senior official. This is how the sentence "I dyed my son red with other people's blood" came from.