In this chapter, we learn that the sound of the demon tianchi is able to trap the other person in a dream and prevent him from waking up. The sound spirit can also make the person who is trapped in the dream fall into a nightmare. This means that if the sound spirit is unable to escape from the nightmare, the person trapped in it will be unable to leave the nightmare. In other words, if you're trapped in your dream, you'll be able to escape, but if you can't, you won't get out of the dream. This is a big problem for the fairy, because she's afraid that if she doesn't summon the demon's sound spirit, she'll end up trapped in her own nightmare. She begs the demon to summon her sound spirit and kill the woman in the pool of blood in the dark. The fairy says that it's her honor to sacrifice her blood for the gods sake, and that's what she did when she woke up that night