In order to maintain the order of slavery, the slave owners in the Western Zhou Dynasty formulated a whole set of ceremonies and stipulated strict grade differences. Due to the strengthening of the ritual system, some utensils used for sacrifices and banquets have been given special significance and become the embodiment of the ritual system. This is the so-called "hidden ceremony in the device." This kind of object is called "bronze ritual vessel" or "sacrificial vessel" for short. Ding, for example, was originally a cooking utensil, and later became one of the most important utensils in ritual vessels. The so-called "Li Ding" combined with the ritual system, He Xiuzhu's "Biography of the Duke of Huan in the Second Year of Ram": "Heaven reigns, seven princes, five doctors and three scholars". It is a symbol of slave owners' ruling authority. This function of ritual vessels was most obvious in the prosperous period of slavery. With the decline of slavery, "the ritual collapsed and the music was bad", and the bronze ritual vessels gradually lost this role. There are many kinds of bronze ritual vessels, which are huge in quantity and exquisite in craftsmanship. Their existence is a remarkable feature of ancient bronzes in China. Bronze ritual vessels can be divided into four categories: food vessels. There are Ding, Wei, Gui, Gui, Zhong, Dun and Dou. Among them, the tripod for holding meat is the most important ritual vessel. The Muswuding unearthed from Yin Ruins in Anyang weighs 875 kilograms and is the heaviest bronze ware ever discovered. Ding system was formed in the middle and late Western Zhou Dynasty, that is, odd ding groups with the same shape and decreasing size represented the identity of nobles. According to He Xiu's note in the Biography of the Spring and Autumn Ram, the emperor used 9 ding, the vassal used 7 ding, the Qing medical used 5 ding, and the scholar used 3 ding or 1 ding. In archaeological discoveries, odd-numbered pots are often used with even-numbered reeds in millet, that is, 9 pots with 8 reeds and 7 pots with 6 reeds. Wine vessel. Including drinking utensils, cups, cups and wine containers, cups, pots, cups, cups, cups and so on. During the Shang Dynasty, drinking became a common practice among nobles, and drinking was forbidden in the early years of the Western Zhou Dynasty. After the mid-Western Zhou Dynasty, bronze drinking vessels were greatly reduced.