Some people say that Wu Liu is a sharp knife of Queen Bai Yan. She just chuckled at this and said: "My Majesty has never treated me as a sword. It's just that the sword must have an edge, and the edge is sharpened for a reason. If I were a knife, the edge would indeed be cut for the Majesty."
Later she died, still for the sake of the empress. She used the soul-returning secret technique to resurrect Prince Ying, at the cost of losing her own soul.
But she found that she was not dead. It turns out that because the ancient books are incomplete, there is no record that the secret technique has a remedy that prevents the soul of the person who casts the spell from dispersing, and that is...
Wu Liu looked at Prince Shi Ying who was practicing his sword under the flower tree, and thought to himself that it would be okay if he didn't let the Queen know.
Purpose: Love always heals each other.