Stone Case With A Carving of Celestial Beings Playing "Liu Bo"

Dinas material, rectangle and reduce portrait relief. The bottom is a shade line. There are two people sit on the table opposite to each other in the picture, their two ears above the head, naked and breast suspended and arms raw hairiness. In the central, there is a case, a chess game. The case engraved with chip. The two people holding their hands for a surprise shape, seem like playing chess. There have two vases in the space, and have a spoon each of the vase. There is a bird on the left, and three trees behind it on the right.