The bronze VATS in the palace were under the unified management of the house of internal affairs. Early in the morning, officials of the house of the interior ordered Sura (the factotum) to take water from the well and fill all the large VATS one by one for fire prevention. Every year in the light snow season, the eunuchs in the palace will coat the copper cylinder with a special cotton cover and a thick cylinder head. At the same time, a pot of charcoal fire was placed in the marble base under the copper cylinder, and it was kept burning day and night. In this way, the water stored in the cylinder is prevented from freezing by double thermal insulation measures. The work of keeping warm could not be finished until the next year when the spring came back and the climate was getting warmer. The eunuchs would take off their cotton jackets and remove the charcoal fire. In order to ensure that the palace has enough water for fire fighting, many large VATS were set up in the palace at that time. According to the "Qing Huidian", there are 308 large VATS in the palace.
Tianjiazhuang village, Tang County, Baoding City, Hebei Province, is the hometown of bronze making. Almost every household is casting bronzes and carving crafts. It has been a long time and exquisite art. It has been handed down from ancestors and has decades of casting experience. His works include copper Buddha statues, copper figures sculptures, animal copper sculptures, bronzes, bronze tripods, copper bells, copper incense burners, copper reliefs, copper vats, and various kinds of town copper wares. The works are exquisite and can be customized. You are welcome to buy them.