Wu is Nian Ling. She is the proprietress of a shop. That shop, the empty city, was exchanged with a family who had a deep obsession and could not let go. What is exchanged is not what the person is willing to exchange for it, but what the real owner of the empty city, that is, An, the owner of Wu, needs.
Wu, has her own dedicated enemies, the Blades, who are incompatible with each other. Wu has her own special spirit dog, Hot Sauce, and they get along very well.
However, in the exchanges again and again, Wu saw clearly the sinister, unbearable, and dirty nature of human nature.
In the exchanges again and again, I saw the truth of the matter clearly.
Who surrounded her with an empty city?
Conception: