The appanage system was severely affected beginning with the civil strife in the Mongol Empire in 1260-1304. Nevertheless, this system survived. For example, Abaqa of the Ilkhanate allowed Möngke Temür of the Golden Horde to collect revenues from silk workshops in northern Persia in 1270 and Baraq of the Chagatai Khanate sent his Muslim vizier to Ilkhanate, ostensibly to investigate his appanages there (The vizier's main mission was to spy on the Ilkhanids in fact) in 1269. After a peace treaty declared among Mongol Khans: Temür, Duwa, Chapar, Tokhta and Oljeitu in 1304, the system began to see a recovery. During the reign of Tugh Temür, Yuan court received a third of revenues of the cities of Transoxiana under Chagatai Khans while Chagatai elites such as Eljigidey, Duwa Temür, Tarmashirin were given lavish presents and sharing in the Yuan dynasty's patronage of Buddhist temples. Tugh Temür was also given some Russian captives by Chagatai prince Changshi as well as Kublai's future khatun Chabi had servant Ahmad Fanakati from Fergana Valley before her marriage. In 1326, Golden Horde started sending tributes to Great Khans of Yuan dynasty again. By 1339, Ozbeg and his successors had received annually 24 thousand ding in paper currency from their Chinese appanages in Shanxi, Cheli and Hunan. H. H. Howorth noted that Ozbeg's envoy required his master's shares from the Yuan court, the headquarters of the Mongol world, for the establishment of new post stations in 1336. This communication ceased only with the breakup, succession struggles and rebellions of Mongol Khanates.