Editing Zhang Xueliang (section)

===Mainland China===
During the first few years of Zhang's imprisonment, he was regularly moved from location to location under the close supervision of Chiang Kai-shek. He was soon joined by his first wife, Yu Fengzhi. The couple began living with the family of one of his wardens, Liu Yiguang. Zhang was allowed access to his bank account, but was (according to custom) expected to pay for most of the expenses related to his detention.{{sfn|Shai|2012|pp=106-107}} In 1940 Yu Fengzhi became sick with breast cancer and was granted permission to seek treatment in the United States.{{sfn|Shai|2012|p=113}} Although they remained affectionate in their letters to one another, the couple would never see each other again. In 1964, Yu agreed to divorce Zhang so that he could marry Edith Chao.{{sfn|Shai|2012|p=131}}