C263 Contract(5)

Ma Mingyun couldn't suppress his curiosity, the sounds kept coming out. When he was listening, he even heard the sound of an animal flapping its wings, but this feeling only lasted for an instant. After a moment, Ma Mingyun could no longer hear the sound of the wings flapping.

Then... Was it just an illusion? Ma Mingyun asked himself, but unfortunately, the answer became very vague