In 1439 Toghtoa Bukha became a Khagan, which is a title of imperial rank equal to the status of emperor, he had a title of  Bogd Khagan Taisun of the Northern Yuan.
In 1439 Toghtoa Bukha became a Khagan, which is a title of imperial rank equal to the status of emperor, he had a title of  Bogd Khagan Taisun of the Northern Yuan.