If that’s not the case (even though the synopsis teased the “mysteries of the East”), it shows the prequel will initially feature a more sundry cast than Game of Thrones.
One or more entries seen here are believed to be based on a previously leaked casting call that was also lined with diverse characters.
Such multi-racial character descriptions have led to speculation that the prequel will spend all or some of its screen time time in Essos, which is where Qarth, The Free Cities, and the Valyrian Penisula are located.