What is the hairstyle of the Korean concubine in "Dae Jang Geum" called?

The big lump on the top of the head of the concubine in ancient Korea turned out to be not her real hair.

Called "Gajong" (also known as hair plate or cloud ring), it is a kind of wig worn by ancient Korean women. Generally, the wig is braided and worn in a dish shape. There are many different styles.

In the early to middle period of Lee's Joseon Dynasty, married women, prostitutes, and high-ranking female officials (shang palace) all wore gacon.