For that reason, the original form of Shosoin was considered to be the Azekura-style of Hokuso and Nanso, which were the only warehouses, while the center Chuso part was open to the breeze without the use of wall or floor panels.
このことから、元来の正倉院は北側と南側の校倉部分のみが倉庫で、中倉にあたる中間部は、壁もなく床板も張らない吹き放しであったと考えられる。