What is the relationship between Zhang Ailing and Zhang Xueliang?

It doesn't matter, because Zhang Xueliang's ancestor surnamed Li was later adopted by the Zhang family. After Zhang Zuo Lin succeeded to the throne, he wanted his eldest son to change his surname and restore his ancestral surname, but there was no such thing until Zhang Xueliang's second brother Zhang Xue Ming named his grandson Li Dazhuang. His family was originally from Hebei, and later went to the northeast, while Zhang Ailing's family was a famous official and scholarly family. Zhang Peilun, Zhang Ailing's grandfather, is Li Hongzhang's son-in-law and staff. Zhang Ailing wants to write Jong, just because there are too many legends in Zhang Xueliang's story.