Clay, you can squeeze it out into round, flat, or long shapes at will. It’s a kind of material that is both fun and interesting. The earliest kneading material should be natural soil (now called pottery clay).
There are two theories about the origin of clay. One theory is that since the Middle Ages in Europe, there has been a small folk plaything called “paper clay”. This material can be toned and has good malleability, which makes Europeans start to use it to sculpt portraits or dolls, and these techniques have gradually spread to Asia.
Another theory is that the Mexicans used the remaining hardened breadcrumbs and added viscose to knead it into a new material, which is called wheat clay. Wheat Clay is suitable for crafts, but due its lack of ductility, it was improved by the Japanese to become another kind of clay called resin clay. Resin clay has strong ductility and is very suitable for making some small ornaments and handicrafts.