Nayan (Mongol Prince) 'Prince of Kwang-ning'. In addition, Nayan was also the foremost leader of the Eastern "ulus"es (tribal groupings and districts ruled by Mongol appanage princes) dominated by the descendants of the brothers of Genghis Khan. Whatever the precise extent of Nayan's appanage, he certainly held sufficient lands within and around Manchuria to give him a power-base from which to launch a rebellion against his kinsman Kublai Khan. Nayan is represented as embodying a traditional Mongol reaction against the increasing sinicisation shown by Kublai Khan and his administration. Nayan adhered to the ancestral nomadic values of the Mongols and was dismayed at
Society of the Mongol Empire to eliminate the overissue of the currency by Mongol and non-Mongol nobles since the reign of Great Khan Ögedei. His authority established united measure based on "sukhe" or silver ingot, however, the Mongols allowed their foreign subjects to mint coins in the denominations and use weight they traditionally used. During the reigns of Ögedei, Güyük and Möngke, Mongol coinage increased with gold and silver coinage in Central Asia and copper and silver coins in Caucasus, Iran and southern Russia.±±§ The Yuan dynasty under Kublai Khan issued paper money backed by silver, and again banknotes supplemented by cash and copper cash.