In Weibo, why didn't He Youjun call his son the eldest son, but his father the eldest grandson?

I think the reason why He Youjun called his son not the eldest son but the eldest grandson of the gambling king should be out of respect for his father, expressed his love for his father, and proved the identity of this child to the world. We all know that the gambling king is famous, an old-timer with a very high social status and the leader of the whole family. Therefore, when telling the identity of his son, he will declare it from the perspective of the person with the highest status in the family, which shows his respect for the gambling king to a certain extent. If you use your own point of view to declare, it will be very impolite, and it will also cause many people to have a lot of bad ideas. Therefore, it is also a kind of protection for children to use such "eldest grandson" to call children at this time. On the other hand, as we all know, the gambling king is very old, but he has never seen his grandson, so it is inevitable that there will be many expectations in his heart. He Youjun is a very filial child, and he wants his father to realize his wish. Now there is just such an opportunity, He Youjun will declare from his father's point of view and express his love for his father in this way. In fact, until now, many people don't recognize He Youjun and Ming Xi, so if you can get the recognition of the gambling king, it means that you and Ming Xi are recognized by the family. Now it is announced that his son is the eldest grandson of the gambling king, indicating that the child has been recognized by the family, and so has the child's mother. It better proves the identity of the child to the world, and this title is absolutely correct.