What do you mean by five kilometers and more than two hundred waves?

It takes courage and perseverance to challenge. Five kilometers and 200 waves is a buzzword, which is usually used to describe the courage and perseverance a person needs when completing a task or challenge. This allusion is often used to describe people's hardships and dangers, and sometimes it is even used to describe the hardships and difficulties of life. In modern times, this sentence has also been extended to an idiom, which is often used to describe going forward bravely when encountering challenges or difficulties.