There is a silent criminal in Meng Chong's world. This is a word from her police father's notes. It is not a person, not an object, it has no shadow, no voice, not an entity at all, it is just an idea. Growing up in the police department, she saw a variety of criminals, a variety of reasons, a variety of methods, the brain gradually gave birth to such a criminal, it is perfect, incomparably noble, looking down on everyone, it is a shadow outside the final barrier in the heart of Meng Chong, has been tempting her. Don't let desire dominate you, don't let hate blind you.