The death note can make people die, and the Su Shen Note can make people revive.
Anze had such a notebook, but he gave it to Su Ranran.
Su Ranran asked him what he was asking, and he said:
You see, everyone has a "Su" in their heart. In this case, the existence of this notebook is meaningless. Everyone more or less hopes to become Su and let the world revolve around him, but this is simply impossible and violates the rules of the world.