Yingzao Fashi
The structural system of Mani Hall was derived from Yingzao Fashi. The "Dougongs" drew particular attention from researchers with there large quantity and various styles. The complicated roof was supported by 127 "Dougongs", which can be categorized into over 20 styles. For example, the "Dougongs" supporting the lower eaves are 1.2m in height, equivalent to 1/3 of the column height. Such dimensions "Dougongs" are typical Song style and can not be found in the Ming or Qing style buildings.