Sanj says that in 2003 an article was published about the genetic origin of the Mongols. The authors of the article compared blood samples collected from various groups. It turned out that one particular gene was widespread, which coincided with the territory that was conquered by Chingis Khan. The article concluded that this gene must be belonging to the descendant of Chingis Khan. The rulers of the Khoshud tribe, Sanj carries on, are descendants of Khasar, Chingis Khan’s brother. The Japanese scholar Hidehiro Okada studied this question based on two Kalmyk texts. The Zaisangud group (i.e. the Khoshuds who live in Sarpa, Kalmykia) sees Kundulen-Ubashi as their founding ancestor. Through this historical figure this groups also establishes a genealogical link with Khasar. During his field research, Sanj says two people from the Zaisangud identified Kundulen-Ubashi as their ancestor. It is known that Kundulen-Ubashi stayed in Dzungaria, but it has not been researched whether he or his relatives came to Kalmykia. Sanj concludes that the Khoshuds are the least researched among the Kalmyk groups in terms of their history, genetics, and language. There are many white spots in the history of certain khans and whole groupings.