What are the patterns and patterns on the ceramics on the market made of?

Hand-painted materials are mostly copies, including Suma asphalt, cobalt, manganese, iron, alumina, calcium oxide, potassium oxide, sodium oxide, gold, chicken blood, jade, human blood and so on. In short, there was nothing useless about the pigments in the past, but now chemical pigments are sometimes added, and any color you want can be added.