The culling bucket, also known as "Diao Dou", was first published in Sima Qian's "Historical Records" and is a bronze-cast marching utensil. This bowl was unearthed from the Sui and Tang tombs in Xiaotun, Yin Ruins. The long handle is slightly perpendicular to the spout. Looking down from top to bottom, it can be observed that the tail end of the handle is pentagonal, with a square hole in the middle, and the shape is exquisite. Turning to the bottom again, you can find that the bottom of the device and the foot are not glazed. The bowl is a warm boiler, which can be heated on the fire. A large number of tombs were unearthed from the Han Dynasty to the Six Dynasties. The materials are copper, iron, pottery and porcelain. The handle has a straight handle and crank. The decoration varies, but the shape is the same.