Volumes One and Two are on the easier side. If you're a seasoned mystery reader, we recommend getting to know the characters first, then jumping straight to Volume Three!
Hidden deep within a forbidden region surrounded by mountains lies an ancient ruin forgotten by time. Gu Yinchuan, Shen Xinghui, Zhou Yanshen, and Lu Linyuan, four young people with their own reasons for coming, venture into this unknown place. But they have no idea that what awaits them is more than ruins and puzzles: there are also secrets buried in the darkness. Supernatural phenomena begin to emerge: shadows that move without a sound, a distorted sense of time, pairs of eyes that seem to be watching them... Is all this an anomaly science cannot explain, or a carefully planned human scheme