Here's the answer:
“손바닥도 마주쳐야 소리가 난다”
Watch a real native speaker say it:
Here's how it sounds in a textbook:
Fun fact: the hundreds of thousands of people learning Korean with Memrise get this phrase correct 89.95% of the time!
Fun fact: the hundreds of thousands of people learning Korean with Memrise get this phrase correct 89.95% of the time!
