This is what we found on Wikipedia regarding the Kublai Khan:

Kublai Khan (23 September 1215 – 18 February 1294), also known by his temple name as the Emperor Shizu of Yuan and his regnal name Setsen Khan, was the founder and first emperor of the Mongol-led Yuan dynasty of China. He proclaimed the dynastic name "Great Yuan" in 1271, and ruled Yuan China until his death in 1294.

Kublai was the second son of Tolui by his chief wife Sorghaghtani Beki, and a grandson of Genghis Khan. He was almost 12 when Genghis Khan died in 1227. He had succeeded his older brother Möngke as Khagan in 1260, but had to defeat his younger brother Ariq Böke in the Toluid Civil War lasting until 1264. This episode marked the beginning of the division of the Mongol Empire. Kublai's real power was limited to the Yuan Empire, even though as Khagan he still influenced the Ilkhanate and, to a significantly lesser degree, the Golden Horde.

In 1271, Kublai established the Yuan dynasty and formally claimed orthodox succession from prior Chinese dynasties. The Yuan dynasty came to rule over most of present-day China, Mongolia, Korea, southern Siberia, and other adjacent areas. He also amassed influence in the Middle East and Europe as Khagan. By 1279, the Yuan conquest of the Song dynasty was completed and Kublai became the first non-Han emperor to rule all of China proper. As emperor, he ordered invasions of Japan, Vietnam, Burma and Java.