During Kublai's reign, the Yuan communication system consisted of some 1,400 postal stations, which used 50,000 horses, 8,400 oxen, 6,700 mules, 4,000 carts, and 6,000 boats.
Kurirji so prepotovali od 200 do 300 km na dan, kar je več od rekorda, ki ga je 600 let kasneje dosegel ameriški Pony Express.