The fact that they were still alive but did not even bother to look for him was very surprising to him but not as surprising as the when he found out who they were.
It turns out that his mother was a may slave at his father's (the Grand Prince's) house.
And once he became pregnant with Ruoxing, his father who was then about to be married to a minister's daughter, had him sent away from his house.
To make matters worse, he didn't just send the pregnant may away, he made his guys to take him to their other camp at Shi Town.
And that is where his mother has been till this day. He, Ruoxing, was taken away from him immediately he put to birth and he never say his son again.
Ruoxing, who was made to think that he was abandoned all this while felt very angry at his supposed father's deceit.
So he was his actual son, yet he had made him to feel grateful for being adopted by him.
