Jade Cong Prismatic Cylinder with Epigraph on all Sides

Description

The jade is yellow-green, with mottled dark-brown soak-induced color. The inside is round and the outside is square, the big round hole go up and down and is higher than the cube. The four sides are engraved with inscriptions, and each side has 12 characters for a total of forty-eight Words. The exterior and the inside are finely polished.