Three Kingdoms: the Eldest Son Mentioned in the History Books

My mother is the most beautiful woman in the world, but she was willing to die in the arms of another man just to let me live. My father is the most difficult hero in the world. He abandoned me three times, but I became someone else's "adopted son" for seven years in Hanzhong. When I finally returned to my father, I found that I had no foundation and only had the title of eldest son. Who is wrong in all this? If it is this troubled world that is wrong. Then, just end it.