Sacrifice to the Sacred Tree, Encounter a Strange Murder at the Beginning

On the eve of the sacrifice, the astronomy professor died mysteriously at home. The scene was unusually clean, and not even a trace of struggle could be found. Only a strange plum blossom footprint stained with mud was left on the floor. The forbidden sacrificial area that was supposed to be closed off and no one set foot on, suddenly had traces that shouldn't exist out of thin air, like someone had broken in, but also like something else. My name is Xiong Da, a native of Gouxiong Ridge. I was once a well-known criminal investigation legend in this area. After a serious injury, I retired to the mountains and forests. I thought I would spend the rest of my life in the mountains. But this case dragged me back to the police force. I thought it was just an ordinary murder case, but the more I investigated, the more frightened I became: The sacrificial puppet that disappeared out of thin air, the girl who knew about the sudden tragic death, the secretive face of the whole village, the old case that no one dared to mention for more than ten years... My younger brother, Xiong Jun, was supposed to follow the family path and learn astronomy, but because of family issues, he took the exam to the police academy and followed me to investigate. I always tell him: The water in Gou Xiong Ling is much deeper than you think. I thought I was investigating a human case. It wasn't until the end that I discovered—— What I checked was not human at all.