The night I received the anonymously delivered bronze hexagram plate, the walls of my house seeped with blood from the Republic of China period. The archaeological team insisted that it was a national treasure, but I found small modern characters engraved on the back of the hexagram plate: "The 7th experiment, they can really come back - Wu Xie, 2015." When I put the hexagram plate into the water, the water source of the entire city began to flow backwards. Groundwater gushes out of a thousand-year-old tomb, and among the photos of the burial objects in the tomb, there is actually my grandfather who just passed away yesterday.