Tā cóng méi líkāi guò jiāxiāng, zhēn shì jǐngdǐzhīwā.
He has never left his hometown — truly a frog in a well.
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From 《庄子·秋水》: a frog at the bottom of a well cannot be told about the ocean, because it is bound by its narrow space. Zhuangzi's image for limited perspective.