Both are just coincidences.
Zhang Ailing’s former residence is located at No. 83, Chifeng Road, Heping District. It happens that Zhang Xueliang’s former residence is diagonally opposite. Zhang Xueliang's ancestor's surname was Li, which was later adopted by the Zhang family. After Zhang Zuolin became successful, he wanted his eldest son to change his surname and restore his ancestor's surname, but it never happened until Zhang Xueliang's second brother Zhang Xueming named his grandson Li Dazhuang. Zhang Xueliang (June 3, 1901 - October 14, 2001), also known as Hanqing, nicknamed Yi'an, and nicknamed Shuangxi and Xiaoliuzi. Han nationality, born in Zhangjiawobao Village, Ejia Village, Huandong Town, Tai'an County, Anshan City, Liaoning Province (formerly known as Zhanjiawopu in Sangzilin), a general of the National Revolutionary Army, the eldest son of the warlord leader Zhang Zuolin, and a famous patriotic general in modern China.
Zhang Ailing is the great-granddaughter of Li Hongzhang. Zhang Ailing was born in Shanghai on September 30, 1920. Her original name was Zhang Ying and her pen name was Liang Jin. Her ancestral home was Tangshan City, Hebei Province. She died in Los Angeles on September 8, 1995. 74 years old. Therefore, there is no relationship between the two people, and it is just a coincidence that their former residences are adjacent.