What was Marco Polo's relationship with Kublai Khan?

The Great Khan, Mangu's brother, Kublai, was indeed hospitable. He had set up his court at Beijing, which was not a Mongol encampment but an impressive city built by Kublai as his new capital after the Mongols took over China in 1264 and established Yuan dynasty (1264-1368). Kublai asked them all about their part of the world, the Pope and the Roman church. Niccolo and Matteo, who spoke Turkic dialects perfectly, answered truthfully and clearly. The Polo brothers were well received in the Great Khan's capital. One year later, the Great Khan sent them on their way with a letter in Turki addressed to Pope Clement IV asking the Pope to send him 100 learned men to teach his people about Christianity and Western science. He also asked Pope to procure oil from the lamp at the Holy Sepulchre in Jerusalem.