sentences:  The Persian-Korean relationship started with cultural exchanges date back to the Three Kingdoms of Korea era, more than 1600 years ago by the way of the Silk Road.A dark blue glass was found in the Cheonmachong Tomb, one of Silla's royal tombs unearthed in Gyeongju, and an exotic golden sword was found in Gyerim-ro, a street also located in Gyeongju.These relics are presumed to have been sent to Silla from ancient Iran or Persia through the Silk Road.