Around the first century, a chiefdom called Koch'ilsan-guk () existed around what is now Dongnae District. At some point, it was absorbed by Silla and made an administrative division called Koch'ilsan-gun (). In 757, it was renamed Dongnae-gun (). In 835, the Buddhist temple Beomeosa was founded in the area.
Around the first century a chiefdom called Koch'ilsan-guk () existed around what is now Dongnae District. At some point, it was absorbed by Silla and made an adminis,trative division called Koch'ilsan-gun (). In 757, it was renamed Dongnae-gun (). In 835, the Buddhist temple Beomeosa was founded in the area.