the three Han nations (of ancient Korea)
Historical term referring to the three ancient Korean kingdoms: Mahan, Jinhan, and Byeonhan.
三韓は古代朝鮮の馬韓、辰韓、弁韓を指す。
The Three Han refer to Mahan, Jinhan, and Byeonhan of ancient Korea.
legendary conquest of the three Korean kingdoms
From 三 (three) + 韓 (Han, referring to the ancient Korean confederacies). The term is a direct Chinese-derived name for the three Han states.