Korea built their homes with holes in the stone floors. Fire was built underneath the floor to keep the house warm. The floors were covered with heavy paper and sealed with a thin coating of bean paste. This shiny floor covering was renewed every year and people would never wear shoes indoors. They entered the rooms in their slippered feet. A sleeping quilt for summer was lighter and stiffer than a soft, fluffy feather quilt for winter.
Hollings,H. C. and Lucille, The Book of Indians, New York: The Platt & Munk Co., Inc. Publishers.