What's the next sentence after a dream?

the past is like a dream, and the next sentence is to disappear, leaving only the green hills hidden. According to the relevant public information, the poem is like a dream, vanishing, leaving only the green hills. Poetic meaning is that after vanishing, only the green mountains are left. Describe them as beautiful poems, and precipitate the history of the green hills, leaving an eternal poetic meaning, which comes from the title Xilin wall of Lu You. In the poem, the green hills refer to the green mountains, symbolizing the pure natural beauty with its green colors and fresh breath.