在宋子文的西安事变日记中,并没记录有关释蒋后如何保证张学良、杨虎城人身安全的内容,在这方面,大量有关事变当事人的回忆,都指宋美龄、宋子文兄妹当时确就以后张学良、杨虎城的人身安全作出了口头的保证。对此,张学良后来接受日本 NHK 记者访问时称,并没有这样的保证,因为他本人人身安全这样的大事,仅凭简单的口头承诺是担保不了的。无论事实如何,西安事变后,蒋介石背信弃义,扣押张学良,并使其长期失去人 In Soong’s Xi’an Incident diary, there was no record of how to ensure the personal safety of Zhang Xueliang and Yang Hucheng after the release of Jiang. In this regard, a large number of memories of the parties involved in the incident refer to both Song Mei-ling and Soong-son brothers and sisters Personal safety made a verbal guarantee. In response, Zhang Hsueh-liang later interviewed a Japanese NHK reporter and said that there is no such guarantee because major events such as his own personal safety can not be guaranteed simply by oral commitments. Regardless of the facts, after the Xi’an Incident, Chiang Kai-shek betrayed his fate and seized Zhang Xueliang, leaving him permanently lost