Okay kiddo, let me tell you about Goryeo ware. It's a special type of pottery that was made a long time ago in a country called Korea. Goryeo ware gets its name from the Goryeo dynasty, which is the name of the Korean kingdom that ruled from 918 to 1392.
People in Korea were really good at making pottery and they used a special technique called celadon to create beautiful designs and colors on their ceramics. Celadon is a type of glaze that is a greenish-blue color and it was really popular back then.
To make Goryeo ware, first, the potters would shape the clay into the desired form, like a vase or a bowl. Then, they would put a special celadon glaze on top of the clay. This glaze was made with certain minerals and chemicals that would turn the surface a pretty greenish-blue color.
After the pottery was glazed, it would be put in a kiln, which is like a big oven. The kiln would be heated up to a really high temperature and the pottery would bake for a long time until it was finished. When it was done, the surface of the pottery would be very shiny and smooth.
Goryeo ware was really popular because it was so beautiful. People all over Korea and even in other countries would use it to decorate their homes and show off their wealth. That's why it's still so famous today, even though it was made so long ago.
So, in summary, Goryeo ware is a type of pottery from Korea that was made during the Goryeo dynasty. It's special because it has a pretty celadon glaze and a shiny, smooth surface. People loved it then and still love it today because it's so beautiful!