During his reign, the Oirats began to openly challenge the authority of the Borjigin family and the Ming dynasty repulsed Northern Yuan invasions.
When the Khuuhai informed the princess of the summons, she was greatly angered, for she knew the evil intent in the Khan's heart.
In 1399, Elbeg Nigülesügchi Khagan was defeated by the Four Oirats and was killed by their leaders, Ugetchi Khashikha and Batula, as a result.
According to Saghang Sechen, his crown was succeeded by his eldest son Gün Temür Khan after his death.
Allied with the late khan's principal consort Kobeguntai, who was jealous of Elbeg's issue with Oljeitu, Ugetchi Khashikha seized his harem and all his properties.