Introduction to the coffin chamber: The back chamber is the coffin chamber. It is 5.45 meters long from north to south and 8.2 meters wide from east to west. It is taller and more spacious than the front room. There is a red imperial case in the center of the back, and on the west side of the case there is a treasure box with a top, which contains the seal of "The Treasure of King Lu". The seal box should have been on the case. The funerary objects in the central part include a huge group of wood-carved and painted figurines, 432 in total, including ceremonial figurines, chariots, horses, etc.