Yin line carving. The original stone is a pair of door leaves. In the picture, evergreen trees and jade walls, birds, sun and moon are carved in the shade. This portrait is the earliest stone carving found in the country at present. From the shape of the tomb and the cultural relics unearthed in the tomb, the age of this tomb is about the early Western Han Dynasty; The jade seal was unearthed in the tomb. The name of the tomb owner was "Liu Zai", and the identity of the tomb owner was noble.