《仪礼·乡饮酒礼》
脯预先陈放在东房中。俎，用时从东壁移至西阶，从西阶上堂设置于席前。
俎由东壁，自西阶升。
Pǔ stored in the eastern chamber in advance. Zǔ, when it is used, move to the west steps from the eastern wall, set it before the mat from the west steps up the hall.