坐井观天 (zuò jǐng guān tiān)

lit. to view the sky from the bottom of a well (idiom); ignorant and n

Character breakdown

Usage

不多出去走走,就会坐井观天。

If you don't go out more, you'll end up with a narrow view of the world.

Bù duō chūqù zǒuzǒu, jiù huì zuòjǐngguāntiān.