What's the name of the emperor's underage brother? A small knighthood cannot be called a monarch, can it? That call prince and prince also confused?

The treatment of the royal family has been a long-standing problem in successive dynasties, which have carried out major reforms on this provision. Take the Ming and Qing Dynasties as an example. In the Ming dynasty, the eldest son of the prince built a shop, and all other scholars were named princes. When I was young, I can seal it. Once I am an adult, I will go to San Francisco, go out to Beijing and live in Huang Zhuang. Without the imperial edict, their descendants can't be local officials, take the imperial examinations, or even engage in foreign trade. If the prince of Zhu had more than a dozen sons, the county's finances would be eaten alive, which was also a reason for the collapse of the dynasty. These underage guys are really princes. In the Qing dynasty, they integrated all the lessons and carried out a huge imperial clan reform. The emperor's son was only called May when he was a minor, and he was called grandpa four, grandpa eight and grandpa thirteen in TV series. When the prince reaches the age of fifteen, please seal the marquis. According to the performance, Uncle Di was named Prince, County King, Baylor, Beizi, and even suspended, and would rise and fall due to meritorious service. Take Yin Zhen, Yong Zhengdi as an example. At the age of twenty, he was named Baylor, and at the age of thirty, he was named Prince Yong. In the Qing dynasty, after the death of the prince, there was no military service, and the prince attacked the prince at the next level. In other words, after the death of the prince, his son inherited as the county king. Because Emperor Kangxi established a system and no longer established a prince. In the Qing Dynasty, he kept the imperial edict as a secret storage system. Since then, there have been no underage princes, and they were knighted until the fifteenth. However, it is possible to build a prince as soon as possible in a sealed prince's mansion, especially there are twelve iron hats that are hereditary, useless and possible.