"In all uses of layered blue-green glazing along decorative ridges, the main shafts feature inner bamboo-grain…
"In all uses of layered blue-green glazing along decorative ridges, the main shafts feature inner bamboo-grain patterns, either plain green or inlaid jade tones. Column tops are finished with receding layered blue-green fortune motifs. Beams may be adorned with green-glazed lotus flowers, multicolored brocade, or squared medallion motifs on a plain field."
— Li Jie, Treatise on Architectural Methods