Introduction to the outdoor raw material processing scene of the Song Dynasty: The excellent quality of Song Dynasty Yao porcelain is closely related to its advanced raw material processing technology. The crushing of raw materials mainly relies on large-scale stone mills pulled by animal power. The raw material washing process has also been improved accordingly. It is equipped with washing, sedimentation and aging devices, and the raw material processing process is quite complete. This scene mainly shows the use of stone mills and stone pestles in the Song Dynasty and the different devices for scouring raw materials.