Introduction to the main hall: The main hall of the Imperial History is built on a 2-meter-high stone platform, surrounded by white marble guardrails. It has a width of 9 rooms, a yellow glazed tube tile verandah roof, and an arch-style beamless building. The forehead railings, brackets, doors, and windows are all carved from white marble, and the forehead railings are decorated with gold-painted scrolls. There are five holes in the palace gate, all of which are double-layered. In the room, there is a 2-meter-high white marble Xumizuo, with 152 gilt-copper camphor wood cabinets carved with clouds and dragons. There are opening windows on the gable wall to allow air cross-flow. Its structure is fire-proof and moisture-proof. It is an important cultural relic building that combines artistry, science and practicality.