In the early years of Tiansheng in the Northern Song Dynasty, the two brothers of the Qi family who were specializing in repairing graves dug up a solitary grave in the middle of the night, causing the corpse to change. It spread quickly among the people, and everyone in Gong'an County was in danger for a while. Is it true that the deceased resurrected and killed, or is it true that some people use the name of ghosts and gods to cover up their crimes? Supervisor Bao Zheng was secretly ordered by the emperor to investigate the case. The destination was the place where Bao Zheng once studied medicine.
A safety coffin or security coffin is a coffin fitted with a mechanism to prevent premature burial or allow the occupant to signal that they have been buried alive. A large number of designs for safety coffins were patented during the 18th and 19th centuries and variations on the idea are still available today.
