Answer:
Dadu
Step-by-step explanation:
The founder of Yuan dynasty was Khublai Khan. Khublai Khan was the grandson of the the brave and famous Genghis Khan. Khublai Khan took the title of "Great Khan" and declared himself supreme over the Chagatai, the Ilkhanate and the Golden Horde. Therefore, Yuan was sometimes were known as the Empire of the Great Khan. Khublai Khan established his capital at Dadu. Another name of Dadu is Khanbaliq, which is now modern day Beijing, the capital city of China. The name Dadu, in pinyin transcription of Chinese means the "Grand Capital".