This jade disk, called a byeok (or bi in Chinese), exhibits a translucent light brown surface with a few spots. Both sides are decorated with the same motif, namely, a spiral motif inside and four pairs of dragons outside. Each dragon has a pair of curled horns and fine lines. It was found in a wooden coffin near the chest of the occupant of Tomb No. 9 in Seogam-ri, Pyongyang.