Answer the following questions in 3-4 complete sentences.

Answer:

Maebyeong bottles were created in Goguryeo. Korean potters used a celadon-high fired glaze of pale, bluish green hue. They would typically apply the glaze over gray stoneware, which had been invented in China. Korean potters experimented with glazes through the years, and their creations rivaled the best Chinese court ceramics.