Master Ryu Geun-hyeong (also known as Ryu Hae-gang) is a potter known for his efforts in reviving Goryeo celadon in Korea, bringing his excellent techniques back to the present day. He was designated a Living National Treasure of Korea in 1988. He dedicated his life to recreating Goryeo celadon and is a leading figure in the Korean pottery world. Tea Ceremony Utensils: Tea Bowls Urasenke, Omotesenke, Mushakoji-senke