次区域

yǐ cì qū yù lǚ yóu hé zuò wéi zhòng xīn gòu jiàn duō céng cì lǚ yóu quān

以次区域旅游合作为重心，构建多层次旅游圈。

The subregional cooperation is taken as the focus, constituting multituting multi-level tourism circles.