What is "dongye"

Dongye, which means the Eastern Ye, was a Korean chiefdom which occupied portions of the northeastern Korean peninsula from roughly 3rd-century BC to around early 5th-century. It bordered Goguryeo and Okjeo to the north, Jinhan to the south, and China's Lelang Commandery to the west. Today, this territory consists of the provinces of South Hamgyŏng and Kangwon in North Korea, and Gangwon in South Korea. It is believed to be one of the ancient tribes that were formed into the Tungusic peoples.