

They were third grade roofs, after hip roofs and resting mountain roofs. Hanging hill roofs (悬山顶 xuánshāndǐng) have two straight, overhanging slopes. The Hall of Preserving Harmony in the Forbidden City has a resting mountain roof with double eaves. There were two styles of Xie Shan roof: mono-eave and double-eave. They were mainly used for important halls, temples, gardens, and other official buildings. 'Resting hill' or Xie Shan roofs (歇山顶 xiēshāndǐng), with two curving sides, were second in importance to hip roofs. The roof of the Hall of Supreme Harmony in the Forbidden City is the best example. Double eaves were only used in royal palaces and Confucian temples during the Ming (1368–1644) and Qing (1644–1912) dynasties. There were two kinds of hip roof: single-eave and double-eave. Hip roofs (庑殿顶 wǔdiàndǐng or 四阿顶 sìādǐng), with all sides sloping, were the classiest traditional roof style, used for special constructions. Here are the four main types in order of hierachy. Different roof forms were used for different types of buildings. There were many kinds of roofs in ancient Chinese architecture. For example, hip roofs could only be used for imperial palaces and temples during the Ming and Qing dynasties, and glazed semicircular tiles (usually yellow) were mainly used for imperial palaces and temples. Roofs had to meet institutional requirements. Hip roofs were mainly used for imperial palaces resting hill roofs were used for official buildings, hanging hill roofs for better-off premises, and hard hill roofs for civil buildings. Roof architecture showed different levels of importance for buildings.
