Jayaatu Khan
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Jayaatu Khan, Emperor Wenzong of Yuan
Birth and death:	1304-1332
Family name:	Borjigin Chinese: 孛兒只斤
Given name:	Tugh Temür Chinese: 圖帖睦爾
Khan title:	Jayaatu Khan (Fortunate Emperor) Chinese: 札牙篤汗
Dates of reign:	1328 - 1329 1329 - 1332
Dynasty:	Yuan (元)
Temple name:	Wenzong (文宗 Wénzōng)
Posthumous name: (short)	-
Posthumous name: (full)	Shengming Yuan Xiao Huangdi (聖明元孝皇帝)
Era names:	Tianli (天曆 Tiānlì) 1328-1330 Zhishun (至順 Zhìshùn) 1330-1332

Emperor Wenzong of Yuan (Chinese: 元文宗, 1304–1332), also known as Jayaatu Khan (Classical Mongolian: Jayaɤatu qaɤan; Khalkha Mongolian: Заяат хаан Zayaat haan), born Tugh Temür, was the Emperor of China and ruled as Emperor or Khaan of the Yuan Dynasty, khanate of Mongol Empire.

He was the second son of Khayishan Külüg Khan and a Tangut woman. Kuśala Khutughtu Khan was his elder brother. When his father Khayishan suddenly died and his younger brother Ayurbarwada inherited khanship in 1311, he and his brother was removed from the central government by his grandmother Dagi and other Khunggirad faction members including Temüder since they were not mothered by Khunggirad khatuns. After Ayurbarwada's son Shidibala Gegeen Khan ascended the throne in 1320, Tugh Temür was relegated to Hainan. When Shidibala was assassinated and Yesün Temür Khan took over as khan, his condition was relaxed. He was given the title of Prince of Huai and was moved to Jiangkang (modern-day Nangjing) and then to Jiangling.

When Yesün Temür Khan died in Shangdu in 1328, Tugh Temür was recalled to Dadu by the Qipchaq commander El Temür since his more influential brother Kuśala stayed in far-away Central Asia. He was installed as grand-khan in Dadu in the 9th month while Yesün Temür's son Ragibagh succeeded to the throne in Shangdu with the support from Yesün Temür's favorite retainer Dawlat Shah. Gaining support from princes and officers in southern Mongolia and Northern China, Dadu-based Tugh Temür eventually won the civil war.

At the same time, however, his elder brother Kuśala gathered support from princes and generals in Mongolia and Chagatai Khanate and entered Karakorum with the overwhelming military presence. Realizing disadvantages, Tugh Temür declared abdication. In the next year, El Temür brought the imperial seal to Kuśala in Mongolia and announced Dadu's intent to welcome him. Kuśala ascended to the throne in the north of Karakorum and Tugh Temür became Crown Prince. On his way to Dadu, Kuśala met with Tugh Temür in Ongghuchad near Shangdu in the eight month. Only 4 days after a banquet with Tugh Temür, he suddenly died, or was supposedly killed with poison by El Temür since he feared being lost power to princes and officers of Chaghadai Ulus and Mongolia, who followed Kuśala. Tugh Temür was restored to the throne. El Temür purged pro-Kuśala officers and brought power to warloards.

He was just on a string during his latter three-year reign. Warlords' despotic rule clearly marked the decline of the empire. He is known for cultural contribution instead. He ordered to compile an encyclopaedia named Jingshi Dadian (經世大典), supported Zhu Xi's Neo-Confucianism and also devoted himself in Buddhism. He supervised the construction of the Stupa of Master Zhaozhou in the Buddhist Bailin Temple.

The western Mongol khanates under Abu Said, Eljigidey, Tarmashirin and Ozbeg sent total 14 tribute missions to the Yuan court during his reign.^[1] Chagatai prince Changshi, who would become a khan later, sent 170 Russian captives to Tugh Temür as a gift. Tugh Temür rewarded him with precious stones. There was a settlement of Russians near Imperial palace. Tugh Temür formed a regiment composed of them as Ever faithful Russian (Ulosz or Urosh) life guard in 1330. The Emperor was also given more Russian captives by Mongol princes in Moghulistan.

He died in 1332. Although he had a son named El Tegüs, he left a will to make Kuśala's son succeed to the throne. So Kuśala's second son Rinchinbal was installed only at the age of six.

References:

• The Cambridge History of China By Denis Twitchett, Herbert Franke, John K. Fairbank ISBN 0521243319, Cambridge University Press, 1994
• Mediaeval Researches from Eastern Asiatic Sources By E. Bretschneider, Routledge ISBN0415244862, Routledge, 2001
• "The Chaghadaids and Islam: the conversion of Tarmashirin Khan (1331-34)". The Journal of the American Oriental Society, October 1, 2002. Biran