This sentence came from the classic Chinese novel," Dream of the Red Chamber." It was a poem that Jia Baoyu wrote in his dream. The meaning of the poem was: I've been through the sea, but I can't find water Except for the Wushan Mountain, there are no clouds. Take a look at the flowers half for cultivation and half for the monarch. Among them," I dream of Nanke, where is it now? If we meet again when we were young " was the second line of the couplet. It meant: Now I have spent many beautiful years, but those wonderful things I have experienced are unforgettable. It seems that all of this happened in a dream. If we can meet again, I will definitely cherish that time. This sentence expressed Jia Baoyu's nostalgia and emotion for the past, as well as his thoughts and feelings about life.