大陆的网络上所流传的文章大多没有引用来源（只有一篇引用了张其昀的《开罗会议纪实》），但此说并非毫无根据。美国国务院出版的《Foreign Relations of the United State: The Conferences at Cairo and Tehran, 1943》（此书有免费PDF版：http://digicoll.library.wisc.edu/cgi-bin/FRUS/FRUS- idx?id=FRUS.FRUS1943CairoTehran）第324页“Chinese Summury Record”里便有如下记载：
“The President then refered to the question of the Ryukyu Islands and enquired more than once whether China would want the Ryukyus. The Generalissimo replied that China would be agreeable to joint occupation of the Ryukyus by China and the United State and, eventually, joint administration by the two countries under the trusteeship of an international organization.”
