It was just because China and the United States got a common understanding on the issue of emperor system, the polity of Japan were not involved in the Cairo Declaration, which provided a base for the preservation of emperor system afterwards.

• 正是由于中美两国在天皇制问题上达成了共识 ,故而《开罗宣言》没有涉及日本的国体问题 ,为后来天皇制的保留提供了一个存在的基础。