carved around the exterior in varying depths of relief with a continuous landscape scene, depicting two scholars on horseback traveling side by side on a narrow mountain path, surrounded by craggy cliffs with overhanging trees and a stream running from the mountain top to the base ending in a swirl, the surface patinated to a warm brown color

王青路，《中国民藏文物鉴赏丛书. 文房集雅》，北京，2007年，圖版53