우후죽순in English:a sudden proliferation or emergence of something

Examples
with 우후죽순.

• 요즘 우후죽순처럼 새로운 카페들이 생기고 있어요.yojeum uhuhjuksooncheoreom saeroun kapeudeuri saenggigo isseoyo.Recently, new cafes are popping up like mushrooms after rain.