In Dafuqin, the son tried to murder a stranger for the position of prince, but unfortunately he didn't succeed in the end. Besides, he himself has no place in the hearts of Guo Jun people. After Ann Guo Jun succeeded to the throne, the son returned to Xianyang again and happened to meet Ying Zheng's mother and son who had just returned home. At that time, the son made the right decision to help Ying Zheng's mother and son return home. It was because of his help that mother and son met Guo Jun smoothly.
If the son had no feelings for Evonne, he would not be persuaded by Evonne to give up the battle for the throne and pick up the sword of the king of Qin.
Extended data:
In history, Ann did have a son named Bi, but only his name was recorded, and no other information was recorded.
Although he is the eldest son in Dafuqin, his intelligence is not as good as that of the winner, and the other side has the help of a good strategist, and Lv Buwei is particularly rich, so he can't compare with the other side at all. Of course, the monarch at that time loved his eldest son very much, but unfortunately, he was not very clever. When he won the throne, he was particularly blatant about winning foreigners, exposing all his goals and weaknesses in front of everyone. Such people can't even protect themselves, let alone govern a country.
Finally, I was put in prison, and I was particularly afraid to see strangers, so I was just a foolhardy person. Finally, he didn't give up, even in prison, he didn't give up killing his brother. He sent someone to assassinate him on his way home, but his strategy was still inferior to the other side. In the end, he was bitten back. I can only say that his IQ is really not enough.