Forbidden Echo

In the 1980s, white mountains and black waters, the secrets of the Jin Dynasty buried for thousands of years In the late autumn of 1987, Chen Shanhai, an associate researcher at the Heilongjiang Provincial Institute of Archeology, was sorting through files when he accidentally discovered clues about his parents' disappearance nineteen years ago - the investigation of the "Eagle Ridge" Jin Dynasty ruins they participated in ended up being sealed in a bizarre way, with three people dead and two going crazy, and all the information was classified as top secret.