Pop Chinese: 说来话长

shuō lái huà cháng.

说 来 话 长。

It's a long story.

A：你不是打算出国留学吗？怎么突然改变主意了？

A: Aren’t you planning to study abroad? Why do you suddenly change your mind?

B：哎，这事说来话长，以后有时间慢慢跟你说。

B: It is a long story. I will explain to you later.

It usually indicates something is so complicated that cannot be explained all in just a few words or in a short time.

Guys, if you want to learn more about Chinese, go check out our official website hello HSK or simply go to www.hschinese.com