Mount Wutai is home to some of the oldest wooden buildings in China that have survived since the era of the Tang Dynasty (618-907). This includes the main hall of Nanchan Temple and the East Hall of Foguang Temple, built in 782 and 857, respectively. They were discovered in 1937 and 1938 by a team of architectural historians including the prominent early 20th-century historian Liang Sicheng. The architectural designs of these buildings have since been studied by leading sinologists and experts in traditional Chinese architecture, such as Nancy Steinhardt. Steinhardt classified these buildings according to the hall types featured in the Yingzao Fashi Chinese building manual written in the 12th century.