The Chinese Imperial Examination Museum is the only underground museum in China, including the main museum, the Nanyuan of Jiangnan Gongyuan and the three areas of Mingyuanlou ruins. There is also the Xiajiang examination shed in Laomendong, which can be visited when visiting Laomendong. The main body of the Chinese Imperial Examination Museum is on the south side of the Mingyuan Building, with a pool of clear water on the top, like an ancient mirror, which will include the reflection of the Mingyuan Building. The mirror area is 1300 square meters, which means the history of the Chinese Imperial Examination 1300 years.