On this day, 36 years ago, on December 26, 1989 (November 29, 1989, the underground cultural relics warehouse of the Palace Museum in Beijing was completed. In late December 1989, the underground cultural relics warehouse of the Palace Museum in Beijing was completed. This underground cultural relic warehouse has a total construction area of more than 5,400 square meters and has three floors underground. It is all made of reinforced concrete frame structure and is treated with special waterproof and moisture-proof technology. The warehouse is equipped with advanced electrical, safety, fire protection and other equipment. After this cultural relics bank is put into use, it will play an important role in changing the crowded storage of cultural relics in the Forbidden City and properly protecting historical and cultural heritage.