Tsaesci is one of the four nations which make up the continent of Akavir.
“Tsaesci is "Snake Palace", once the strongest power in Akavir (before the Tiger-Dragon came). The serpent-folk ate all the Men of Akavir a long time ago, but still kind of look like them. They are tall, beautiful (if frightening), covered in golden scales, and immortal. They enslave the goblins of the surrounding isles, who provide labor and fresh blood. The holdings of Tsaesci are widespread. When natives of Tamriel think of the Akaviri they think of the Serpent-Folk, because one ruled the Cyrodilic Empire for four hundred years in the previous era. He was Potentate Versidue-Shaie, assassinated by the Morag Tong.
— Mysterious Akavir