Fang Yi had grown up in an orphanage since he was very young, thinking he had no parents. Even after he was adopted by an elderly couple and led a life of turmoil, he still believed he had no parents.
But as he grew older, Fang Yi gradually understood that it wasn't that he had no parents, but that his parents must have had some difficulties that forced them to leave him at the orphanage.
All along, Fang Yi had wanted to meet them and ask them face-to-face why they abandoned him.
As Fang Yi grew up, he did all sorts of things; he robbed, became a bandit, became an assassin, and Fang Yi increasingly felt he was very lonely.
He shouldn't be this lonely!
No one could understand that a child without parents is the loneliest, and when that child learns where his parents are, his mind certainly won't settle down.
Fang Yi was a flesh and blood person; his heart wasn't made of hard iron, so he couldn't calm down.