Is Li Nange, the father of Li Tusi in Qinghai, related to Li Gang, the last emperor of Xixia in Yuan, Ming and Qing Dynasties?

There are two different opinions about the origin of Li Tusi since Ming Dynasty, namely, Shatuo Tusi and Tangut Tusi. The earliest existing genealogy of Li is called the descendant of Li in Shatuo, and some later genealogies simply combined these two opinions into one: after the death of Li in Shatuo in the later Tang Dynasty, it was followed by Li in Tangut, Li Jue, the last emperor of Xixia, and Li Shangge, the ancestor of Li's Tusi. I think the record that Li Tusi came from Shatuo Li should be more credible. At the end of the Tang Dynasty, some Shatuo people moved to Hexi. During the reign of Xixia, they enjoyed a high political status. At that time, people called him "Xiao Li" and "different from the surname of Xixia". Later generations may be mistaken for Li, a Tangut royal family, because he is a follower of Xixia, but there is no reliable evidence to prove that Li Shangge was possessed as the son of Li Jue, the last emperor of Xixia.