 According to Cen Zhongmian, the aforementioned names are related to a variant of "elteris".Duan Lianqin asserted that the name Yishibo (Yiedie Khan) can also be read interchangeably as Yedie (也咥).The "Zizhi Tongjian", in the original, referred to one ethnic Xueyantuo general named Duomo, possibly the Yitewushi Khan (after he became a Tang general) by the family name of Xue—although the "Tang Huiyao" indicated that it was not the same person, as it indicated that the Yitewushi Khan died during Emperor Taizong's reign.