Won't they ask for an exit permit?

他们不是还要查验出境许可证吗？

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An alien shall obtain an income tax certificate from this Administration before his or her departure or upon application for his or her exit permit or for a visa extension of stay.

外侨离境前或申请延期居留时，应向各居留地所在之国税局办理所得税纳税证明书，始可向入出境管理机关申请出境或延期居留。

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Foreigners holding valid residence permit can exit and enter China without applying for a visa.

外国人在居留许可有效期内可以多次出入境，无须办理签证。

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The BBC's Sarah Rainsford, in Havana, says the exit permit process is hated by most Cubans so this reform, which was much anticipated, will be widely welcomed.

BBC: Cuba to end exit permits for foreign travel