The native dynasty (Ming) which supplanted them established their residence at Nan-king ("South Court"), but this proved so inconvenient that Yunglo, the third sovereign of the dynasty, reoccupied Ta-tu, giving it then, for the first time, the name of Pe-king ("North Court").
His great successor, Kublai Khan (1280-1294), rebuilt the town, which he called Yenking, and which became known in Chinese as Ta-tu, or "great court," and in Mongolian as Khanbalik (Cambaluc), or "city of the khan."
The latter selected a position a few hundred yards to the north-east of the old city of Chung-tu or Yenking, where he founded the new city of Ta-tu ("great capital"), called by the Mongols Taidu or Daitu, but also KhanBalik; and from this time dates the use of the latter name as applied to this site.
Ta-tu continued to be the residence of the emperors till the fall of the Mongol power (1368).