In Jingchuan County, my nephew collected the remains of his uncle and dug out a notebook: There were living things underground in the old house in the south of the city, and the pulse was 72 times per minute. My uncle went in four times, and his fellow travelers went crazy and disappeared. The cracks at the wellhead that have been sealed for thirty years are opening inch by inch. The last words he carved on the bed board were only six words - it's coming up, run quickly.