Today, we call Jeju the beautiful island of South Korea.

However, fifteen hundred years ago, there was a king on this island.

The country to which the King of Baekje turned back after preparing a fleet.

The country that sent a prince as an envoy to the Japanese court.

The country whose name appeared alongside Silla and Baekje on the list of rituals at Mount Tai in the Tang Dynasty.

The country that Goryeo called a "vassal state," meaning a nation outside its own borders rather than part of its own territory.

That name was Tamna.

This video traces the entire history of this island nation spanning a thousand years, starting with the Samseonghyeol myth, through Tamna’s multifaceted diplomacy traversing Baekje, Silla, Japan, and the Tang Dynasty,

its incorporation into Goryeo and the demise of the Sambyeolcho, the direct rule of the Mongol Empire, the horse pastures, and the Mokho Rebellion,

and finally, the era in Joseon where the titles of Castle Lord and Prince vanished with a single document.

It is structured based on the *Samguk Sagi*, *Goryeosa*, *Joseonjo Sillok*, Japanese records, and archaeological excavation findings,

and includes the full text of parts where academic interpretations differ. 00:00 The Island Where Planes Land, and the Fleet Filling the Horizon
02:00 The Sea Was a Road, Not a Border
05:30 The Myth of Samseonghyeol and Its Hidden Side
09:00 Juho and Osujeon – A Connection from Two Thousand Years Ago
13:00 The Emergence of the Name Tamna
16:30 Eunsol of the Baekje Court in 476
21:00 The Day King Dongseong Turned the Fleet Around
25:30 The Fall of Baekje and the Surrender of Silla
30:00 The Princes Who Crossed Over to Japan
35:00 The Castle Lords and Princes of King Taejo of Goryeo
40:00 From Nation to Province in 1,115
45:00 The Last Sea of ​​the Sambyeolcho
51:00 The Island Became a Direct Territory of the Yuan Dynasty
57:00 Horses, Mokho, and One Hundred Years
63:00 Myeongwolpo in 1,374
69:00 A Thousand Years Ended by a Single Joseon Document
75:00 Tamna Is It Korean History?

82:00 What Remains

88:00 Back to the Horizon

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