What was the second son called in the ancient order of ranking?

In ancient China, the order of precedence was usually determined by the order of birth, so the second son was called the "second son". This title was based on the order of birth of the siblings to differentiate the order of precedence between siblings. In ancient China, where the concepts of family and superiority and inferiority were very important, the order of precedence often had a special significance in family relationships.

The "eldest son" was usually the highest-ranking son in the family, and had special rights and responsibilities, such as inheriting the family property and business. The other siblings are the "second son," "third son," "fourth son," and so on, in ascending order of birth.

This kind of ranking reflects the cultural characteristics of ancient China's order of honor and inferiority, family tradition and inheritance system. Each row has its unique role and responsibility in the family, so rows were very important in ancient Chinese society.