What is the difference between the eldest son, the eldest son and the eldest son in ancient times?

The ancient feudal society has always been a system of polygamy. The more children the family pays attention to, the better, but the identity of children is different. With wives and concubines, a man can only have one wife, just as an emperor can only have one queen. The child born to a wife is a son, and the eldest son born to a wife is the eldest son. Generally, wives have never had children, and concubines are not allowed to have children. The children born to concubines are illegitimate children.

First, the eldest son is sorted according to all children. The first child born is the eldest son. Generally speaking, if a man is not married and only has concubines, concubines are not allowed to have children before the woman comes in. This is also disrespectful to the hostess, but there are exceptions. For example, the emperor in the palace is exposed to rain and dew, and any concubine can have children. The first child is the eldest son, such as the Qing Dynasty.

Second, there can be many Di Zi Di Zi, including children born to his wife. Compared with his mother, Di Zi's only son is Di Zi, and Di Zi's eldest son is Di Zi, basically the son who will inherit the family business in the future. If my concubine gives birth to a child, she will be supported as a wife, so her son who becomes a wife will be more honorable than her first son. In the past dynasties, the gap between Di Zi and his eldest son still existed.

Third, the difference between treating children is that they should be long rather than virtuous, and expensive rather than long. The general family is inherited by the eldest son. The eldest son can be born when he dies, and the second son can only be considered when he is young. If the wife has no son, consider the son of a concubine, but this is very small. Generally, a family must have a hostess, so the eldest son generally has no advantage over the eldest son.