While relations between Turkey and Vietnam is less known comparing to other countries in the Sinosphere world, the Mongol Army invading Vietnam at 13th century was thought to be formed by majority of Turkic and Persian warriors fighting in the war. Many of them were entirely annihilated in all three failed invasions to Vietnam, which marked the first connection between the Vietnamese and Turks. After the failed invasions, the Turks would eventually immigrate to Anatolia and found the Ottoman Empire, and two countries would have no official link until 20th century.