Seated Bodhisattva, c. 775 Wood core, dry lacquer, traces of gold leaf. This sculpture represents a dramatic shift in Japanese sculptural tradition—a move away from the expensive, time-consuming technique of using lacquer (a resin extracted from the sap of a tree) over a temporary clay core that, once removed, left a sculpture that was completely hollow except for perhaps a wood bracing system. Here a sculpted wood core is overlaid with lacquer-soaked cloth. The Art Institute of Chicago