Due to the majesty of imperial power at that time, the bricks dedicated to the emperor could not flow to the people, and the extra bricks must be destroyed. But at that time, I didn't know which craftsman left the gold bricks, and now they are sold at sky-high prices. The BRICS can be said to be the ultimate artwork of ancient craftsmen. It looks like jet, warm in winter and cool in summer, and its texture is very hard. There is a clang of metal when knocking, which is one of the reasons why the golden bricks in the Forbidden City are not afraid of being trampled by tourists. At present, only the Hall of Supreme Harmony, the Hall of Zhonghe and the Hall of Baohe in the Forbidden City are pasted with gold bricks, which are not open to tourists at ordinary times. Of course, they are not afraid of damage.