Career
He established a base on the Tuul river. Known as an intellectual he embraced the Karma sect and built monasteries and castles. He submitted himself to Ligdan Khan, last grand khan of the Mongols.
He took part in Ligdan"s campaign to Tibet to help the Karma sect although Ligdan Khan died in 1634 before they joined together.
But he pursued the campaign. In the same year he conquered the Tümedical around Kokonor (Qinghai Lake) and moved his base there.
However, Arslan attacked his ally Tsang army. Arslan was eventually assassinated by Tsoghtu"s order.
The Geluk sect asked for help Törü Bayikhu (Güshi Khan), the leader of the Khoshuud tribe of the Oirat confederation.
In 1636 Törö Bayikhu led the Khoshuud and the Dzungars to Tibet. In the next year a decisive war between Tsoghtu Khong Tayiji and Törü Bayikhu ended in the latter"s victory and Tsoght was killed. Descendants of Sutai Yeldeng, Tsoghtu"s grandson, succeeded the jasagh of a banner in Sain Noyon Khan Aimag.
He has traditionally been portrayed as evil by the Geluk section
On the other hand, the Mongolian movie "Tsogt taij" (1945) treated him as a national hero.