It was the priest Chogen who was appointed chief of the reconstruction of the Great Buddha and its hall, and Chogen (also called Shunjo-bo) once had been to Sung-dynasty China, so he newly applied Daibutsu-yo (the Buddhist architecture), which originated from Sung-dynasty China, to the hall.
大仏と大仏殿の再建担当者に任じられたのは渡宋経験のある俊乗坊重源（しゅんじょうぼうちょうげん）であり、彼によって宋から伝来の新建築様式の大仏様が導入された。