2. In order to meet the psychological demand of China people for porcelain during the war, the porcelain produced by kiln households, regardless of thickness, is made of porcelain cakes, and the porcelain produced is heavy and durable. The middle part of the flat bottom is concave, and the spiral line can be seen. The bottom of the plate is flat, which is rare in the Ming Dynasty. There are often kiln cracks at the bottom of the plate, and the bottom is kiln red, that is, flint red. The foot root is slightly inward, the foot wall is deep and wide, and some of them are double-circle feet. Some artifacts have been carefully trimmed by craftsmen, showing loach backs, which are very smooth and have the characteristics of early Kangxi porcelain.