[1] Bihwa Gaya is mentioned in the Goryeo Saryak and under the name Hijiho (比自㶱, Korean Revised Romanization: Bijabal) in the Japanese chronicle Nihonshoki.
It may have arisen from the 3rd century Jinhan state of Bulsaguk (불사국, 不斯國) which was probably also located in modern-day Changnyeong.
The royal tombs of Bihwa Gaya are located in Gyo-dong, Changnyeong-eup, in Changnyeong County.
In 1973, a team of researchers from Busan's Dong-A University excavated several remaining tombs.
In 1996, a museum focusing on the relics of the Bihwa Gaya period opened adjacent to the tombs.