宫中设置大量铜缸的初意图是用来防火的，但其实际存在的价值绝不仅仅局限于消防，同时它还是宫内大殿、庭院中不可或缺的陈列品。清代宫中各处陈设吉祥缸的质地、大小、多少都要随具体的环境而定。鎏金铜缸等级高，因此要设列在皇帝上朝议政的太和殿、保和殿两侧以及用于“御门听政”的乾清门外红墙前边。而在后宫及东西长街，就只能陈设较小的铜缸或铁缸了。

The original intention of setting a large number of copper tanks in the palace is to prevent fire, but its actual value is not limited to fire fighting, and it is also an indispensable display in the palace hall and courtyard. In the Qing Dynasty, the quality, size and quantity of auspicious jars in the palace were determined by the specific environment. The gold-plated copper VAT is of high grade, so it should be set up on both sides of the Taihe hall and Baohe hall where the emperor discussed politics in the last dynasty, and in front of the red wall outside the Qianqing gate, which is used for "the imperial gate listens to politics". In the back palace and the East-West long street, there are only small copper or iron tanks.

明清政府为建造这些大缸耗费了相当大的物力、财力。拿鎏金铜缸来讲，整个工艺非常复杂，其方法是首先在金属器物表面涂上金的合金，然后进行烘烤，蒸发，将黄金滞留下来，仿古青铜大缸生产，目前故宫中尚存18口鎏金铜缸，虽说已经遭到了部分的破坏，但个个仍然金光灿烂，光彩夺目，华美无比。

The Ming and Qing governments spent considerable material and financial resources to build these vats. In terms of gilded copper jars, the whole process is very complicated. The method is to first coat gold alloy on the surface of metal artifacts, then bake, evaporate, and detain the gold. The large vat of antique bronze is produced. At present, there are 18 gilded copper jars in the Palace Museum. Although they have been partially damaged, they are still golden, dazzling and gorgeous.

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