The correct word order should be "Don't laugh at young people's dreams of rivers and lakes, who didn't have them when they were young". "Don't laugh at young people's dreams of rivers and lakes, who didn't have them when they were young" is a poem written by Jin Yong, describing Zhang Sanfeng, the founder of Wutangmen. Don't laugh at young people's Jianghu dreams. Everyone had their own dreams when they were young. This sentence expresses respect and encouragement for young people, and thinks that it is a good thing for young people to have dreams, which should be affirmed and supported, not ridiculed. Remind young people to pursue and persist, and strive to realize their Jianghu dreams.