Made of white jade, the jade is fine and moist, most of which have a dark brown color, and is carved in the round. Length, claws and hooves are distinct. The knife technique of the whole device is refined, the style is simple, and a few knives will bring out the charm of the machine. It is extremely difficult to store them in pairs. 白玉製成，玉質細膩溫潤，大部分帶有黑褐色沁色，圓雕而成，體型呈長方柱形，上端窄，下端較寬，頭部斜削，腿足作臥狀，伸曲有度，爪蹄分明。整器刀法精煉，風格樸實，寥寥數刀便機具神韻，成對保存，極為不易。