His decision to divide the six tumens of Eastern Mongolia as fiefs for his sons created decentralized but stable Borjigin rule over the Mongolian Plateau for a century.
Although Bolkhu and his family suffered through life's darkest hours during the reign of Esen and the internal conflict of the Northern Yuan dynasty, they were welcomed by his uncle (brother) Manduul Khan (r. 1465–1467) soon after his coronation.
Batumongke and his queen Mandukhai led Mongol armies in 1483 against Ismayil Taishi who after the imperial victory over him fled to Hami where he was killed by other Muslims and Turco-Mongols.
The most important achievement of the couple was their defeat of the war-like Oirats who had previously revolted against the rule of the Borjigin Emperors since the 14th century.
With Dayan Khan and Mandukhai's movement to the Eight white yurts in Ordos in 1500, they launched a massive attack on Ningxia and conquered some lands.
Barely escaping the Ming attack, Dayan Khan relocated to the Kherlen River, yet large-scale raids all along the frontier continued through 1507.
[9] Because Iburai Taishi (also known as Ibrahim), an Uighur adventurer or an Oirat/Kharchin warlord and Mandulai dominated the area, the three Tumens were seeking a more agreeable arrangement.
Because a large group of the Uriankhai Tumen defected to Iburai, Dayan Khan was first defeated at Turgen Stream at present-day Tumed territory.
Instead of enslaving the Right Wing Tumens, Dayan Khan had Barsubolad enthroned as jinong (晉王) in 1513, abolishing old titles like taishi (太師) and chingsang (丞相) of the Yuan dynasty.
With defeats of Iburai and Ismayil, Dayan and Mandukhai could remove the power of descendants of the Alans, the Kypchaks and the Hami Muslim warlords from the Northern Yuan court in the Mongolian Plateau.
Batumongke Dayan Khan repeatedly sought trade relation with the Ming, but rejection turned him more and more to outright warfare.
Although the Ming dynasty held the Mongols off in a major battle, Dayan Khan and his successors continued to threaten China until 1526.
[11] Dayan Khan and Mandukhai's nation now stretched from the Siberian tundra and Lake Baikal in the north, across the Gobi, to the edge of the Yellow River and south of it into the Ordos.
[12] He reorganized the Eastern Mongols into 6 tumens (literally "ten thousand") as follows: They functioned both as military units and as tribal administrative bodies.
Despite this decentralization there was a remarkable concord within the Dayan Khanid aristocracy and intra-Chinggisid civil war remained unknown until the reign of Ligden Khan (1604–34).
Dayan Khan is an important background character in the historical novel "Manduchai", written by German Author Tanja Kinkel in 2014.
Dayan Khan appeared as a background character in the historical drama "Marco Polo" on Season 2 Episode 11, written John Fusco and Lorenzo Richelmy in 2016.