If you ask Qin Si if he does not regret meeting Chu Yan in this life, he will definitely answer that he does not regret it.
However, this is not necessarily the case for Chu Yan.
He couldn't protect anyone he wanted to protect in his life. In the end, he used his broken body to protect his only light in the world.
"Asi, don't hate me, I love you."
Chu Yan had a bad fate when he was a child. He was always used to kill people, and was even used as a substitute. But in this life, before he died, he did something satisfying.
Qin Si, on the other hand, has been waiting for his brother Yan to come back and buy him candy.
BE Literature
Chu Yan×Qin Si
Purpose: Protect those you want to protect at your own risk