Does anyone know how heavy the burden of the eldest son is in China?

Family Role of the Modern Eldest Son. Older brothers, especially the eldest son, hold a special role in traditional Chinese families. Older brothers often take on household chores and other physical labor earlier, and act as protectors and role models for other younger brothers and sisters. Older brothers often play the role of half-parent in the family and have a certain degree of authority over their younger brothers and sisters. At special times they take on the burden of the whole family and inherit the role of the father. Older brothers are more likely than younger brothers to inherit their father's rights, status, and occupation. Parents are more strict with older brothers and have high hopes that one day they will be able to take on their own responsibilities. Older brothers are generally more mature and stable, submit to parental authority, communicate easily with their elders, and face more pressure. Older brothers are generally less rebellious and innovative than younger brothers. Contrary to the first point, older brothers are likely to be more loved and protected by their parents, and may even take advantage of their older brother's authority to maintain their status. Throughout Chinese history, the first-born son inheritance system was a principle of inheritance practiced in ancient China under polygamy, and it was one of the core systems for maintaining the patriarchal system. The first wife is the first wife, the first wife, and the eldest son born to the first wife is the first-born son. The law stipulates that the first-born son has priority in inheritance. This system started at the end of the Shang Dynasty and was established at the beginning of the Zhou Dynasty. Specifically, it was stipulated that "the first son should be established on the basis of his superiority, not on the basis of his virtue, and the son should be established on the basis of his nobility, not on the basis of his superiority". In the inheritance of property, all the sons have the right to inherit, the first-born son is still in an advantageous position - the throne, title, official position, ancestral halls can not be divided, property can be divided is one of the reasons.