Tian'anmen (the Gate of Heavenly Peace), is located in the center of Beijing. It was first built in 1417 and named Chengtianmen (the Gate of Heavenly Succession). At the end of the Ming Dynasty, it was seriously damaged by war. When it was rebuilt under the Qing in 1651, it was renamed Tian'anmen, and served as the main entrance to the Imperial City, the administrative and residential quarters for court officials and retainers. The southern sections of the Imperial City wall still stand on both sides of the Gate. The tower at the top of the gate is nine-room wide and five –room deep. According to the Book of Changes, the two numbers nine and five, when combined, symbolize the supreme status of a sovereign. During the Ming and Qing dynasties, Tian'anmen was the place where state ceremonies took place. The most important one of them was the issuing of imperial edicts, which followed these steps:

　　1) The Minister of Rites would receive the edict in Taihedian (Hall of Supreme Harmony), where the Emperor was holding his court. The minister would then carry the decree on a yunpan (tray of cloud), and withdraw from the hall via Taihemen (Gate of supreme Harmony)

　　2) The Minister would put the tray in a miniature longting (dragon pavilion). Beneath a yellow umbrella and carry it via Wumen (Meridian Gate), to Tian'anmen Gate tower. 3) A courtier would be invested to proclaim the edict. The civil and military officials lining both sides of the gateway beneath the tower would prostrate themselves in the direction of the emperor in waiting for the decree to the proclaimed.

　　4) The courtier would then put the edict in a phoenix-shaped wooden box and lower it from the tower by means of a silk cord. The document would finally be carried in a similar tray of cloud under a yellow umbrella to the Ministry of Rites.

　　5) The edict, copied on yellow paper, would be made known