After Rebirth, I Will Not Be the Princess's Son-In-Law

In his previous life, Song Qingshan held the pass for half his life, but in the end he became a bargaining chip for Emperor Yan to seek peace. After thirty years of raising a son-in-law, what he got in exchange was that he died of illness and was hospitalized. Open your eyes again and go back to the day when the lonely city was defeated. In this life, he spared his old enemies and spared himself. But when the old friend wakes up from his dream, the mountains and rivers of the past remain the same. In this case, you might as well try it again. In this life, no one can decide whether he will stay or go.