Period:Warring States period Production date:5thC BC - 2ndC BC Materials:jade Technique:incised Dimensions:Diameter: 10.80 centimetres Description: White altered jade disc bi worke...

Period:Warring States period Production date:4thC BC-2ndC BC Materials:jade Technique:polished (?) Dimensions:Diameter: 6.80 centimetres Description: Disc (bi) of white translucent...

Period:Eastern Zhou dynasty Production date:4thC BC Materials:soapstone Technique:incised Dimensions:Diameter: 15.80 centimetres Description: Disc, 'bi'. Made of soapstone (steatit...