Sands Mystery

She had been a criminal police officer for eight years and recognized the face of the deceased at a crime scene for the first time. On a rainy night at the Jinsha ruins, a corpse was placed in a sacrificial posture, with her grandfather's handwriting hidden in the pocket. It was a group photo of the Sanxingdui excavation team in 1987 - fifteen people, three of whom were circled in red pen, one of whom was her grandfather and the other was her partner's grandfather. On the back of the photo it says: We all don't live long. Six cases occurred in a row, and the deceased were all members of the excavation team. Each corpse is a letter, and each letter points to the same recipient—the guardian of Guixu who is still hiding somewhere in Chengdu. And the secret he wants to protect is the answer that her grandfather spent his life hiding.