What kind of roof form does Tiananmen Gate Tower in Beijing belong to?

Tian 'anmen Gate Tower in Beijing belongs to the roof of "double eaves and rest mountains".

The sloping mountain architecture is only one level lower than the Xiandian architecture, and it is one of the main forms of palace architecture. Often used as the main affiliated hall of a palace or ancestral temple, it occupies a secondary position if it is located on the central axis.

In the ancient architecture of China, the roof forms of "Fairy Hall" and "Xieshan" respectively represent two different architectural levels. "Fairy Hall" architecture is the highest form in ancient architecture, representing the highest level.

This kind of building is characterized by four slopes on the roof, which meet into five ridges, so it is also commonly known as "the top of four slopes" and "the hall of five ridges". It is often regarded as the most distinguished building, such as the Hall of Supreme Harmony in the Forbidden City, the Wumen Gate Tower, the ancestral temple, the Shouhuang Hall in Jingshan and the Lingen Hall in Changling.

The roof of Tiananmen Square is another architectural form lower than the Temple of Heaven, and the level it represents is also slightly lower than the Temple of Heaven. This form is called "sloping mountain style", and it is also called "sloping mountain style" because Tiananmen Gate is a double-eaved building. The roof of this building is a "double-eaves-backed" roof.

The sloping mountain architecture is only one level lower than the Xiandian architecture, and it is one of the main forms of palace architecture. Often used as the main affiliated hall of a palace or ancestral temple, it occupies a secondary position if it is located on the central axis.

Although Tiananmen Square is the main entrance of the imperial city and located on the central axis, it is not the most important building compared with the main buildings such as Hall of Supreme Harmony, Wumen and Gan Qing Palace, and its position is also lower than Wumen, so it adopts the form of double eaves to rest the mountain.