Marco Polo & Rustichello of Pisa 
The Travels of Marco Polo — Volume 2 – Illustrated 

After riding then those ten days from the city of Juju, you find yourself in a kingdom called Taianfu, and the city at which you arrive, which is the capital, is also called Taianfu, a very great and fine city. [But at the end of five days’ journey out of those ten, they say there is a city unusually large and handsome called Acbaluc, whereat terminate in this direction the hunting preserves of the Emperor, within which no one dares to sport except the Emperor and his family, and those who are on the books of the Grand Falconer. Beyond this limit any one is at liberty to sport, if he be a gentleman. The Great Kaan, however, scarcely ever went hunting in this direction, and hence the game, particularly the hares, had increased and multiplied to such an extent that all the crops of the Province were destroyed. The Great Kaan being informed of this, proceeded thither with all his Court, and the game that was taken was past counting.]