[1] According to the History of Yuan, Bayan Qudu was known for being "frugal, unjealous, and thoroughly observant of ritual and regulation," which was a sharp contrast to the character and nature of the emperor's favourite concubine, Lady Ki (later known as Öljei Quduq).
According to traditional sources, Bayan Qudu was known for being plain and of simple habits, preferring to lead a retiring life, presumably due to the fact that Toghon Temür showed her very little attention.
However, on a journey to Shangdu, just 320 kilometres (200 miles) north of Dadu (Beijing), Toghon Temür desired to pay his empress a visit.
This caused much controversy due to the fact that Toghon Temür's favourite concubine, Lady Ki, had already given birth to a desired heir, Ayushiridara.
The empress's child, however, died at less than two years of age, thus securing Lady Ki's future and the succession of her own son.