He sent letters with tributes to the court of Yuan Dynasty. Because Tarmarshirin preferred to dwell in cities of Transoxiana, he was accused of abandoning the traditional Mongol code of conduct, Yassa, and was deposed in the horde's annual kurultai.
Tarmarshirin sent letters of tribute to the Yuan Dynasty court.  However, his preference for urban life in Transoxiana led to accusations that he had abandoned the traditional Mongol code of conduct (Yassa), resulting in his removal from power at the annual kurultai of the horde.