1. "Official uniform" should be called "official uniform" or "official uniform", which represents the identity of an official and is worn on formal occasions, such as going to court and meeting foreign envoys. "Official business" means normal ordinary clothes, which are worn casually in unofficial occasions, such as friends gathering.

Second, in ancient times, "dragon" was revered, while "snake" and "dragon" were considered as "close relatives" in ancient times, which were very similar. "Dragon and snake mixed". It is said that snakes can grow horns on their heads through evolution, and then grow limbs in their stomachs, which is very similar to dragons and is called "dragons". Kirin stands for auspiciousness and nobility, flying fish stands for "diving into the dragon gate", and bullfighting stands for force. Therefore, the order of these four kinds of clothes should be "python suit, Kirin suit, flying fish suit and bullfighting suit". As for the patterns below these four clothes, it should be based on auspicious clouds, representing auspiciousness and climbing. As for more details, I haven't studied them and I can't help you.