In ancient times, there were several ways to address the eldest and youngest sons. The simplest form of address was the youngest son, while the eldest son was called the eldest son. In a more cultured family, when introducing their son, they might say,"This is my son XXX" or call him "little child." When talking about the other party's son, they would usually use the title of "your son" or "young master". In addition, according to the way of addressing in classical Chinese, one's own son could be called "dog son,""evil son,""unfilial son," etc., while other people's sons could be called "Ling Zi,""good son,""extraordinary son,""virtuous son," etc. In addition, he could also use honorifics such as "your son,""Jia 'er,""Lin' er," and "your son." In short, according to the information provided, there were many ways to address the eldest son and the youngest son in ancient times. The specific way of addressing them might vary according to the region, culture, and personal habits.
The eldest son could be called the eldest son, and the second son could be called the second son.
Your son can call your uncle "son-in-law".
The son of the City Lord of Dongyi was called Sigu Jian.
The son of the Dongyi City Lord was called Sigu Jian.
In ancient times, the second son of an emperor could be called the " Second Prince ".
The son of the Dongyi City Lord was called Sigu Jian in the novel Joy of Life.
The son of the City Lord of Dongyi was called Sigu Jian.
"The Perfect Heart System" fits your requirements. There is indeed a plot in the story where a father transplants his eldest son's heart into his youngest son in order to save him. This novel belongs to the urban supernatural category. I hope you like this fairy's recommendation. Muah ~😗
First, it's important to have an open and honest conversation with your son. Let him know that such stories are not appropriate for his age. Explain the values of respect and healthy relationships.