Let's talk about cool selfies.

Reference answer: fifty years is like a song, with bass and treble; The music gradually reached its climax.

Analyzing the sentence characteristics given by the topic is helpful to solve the problem. (1) Make good use of metaphors. The sentence lists three similar sentences, "like a long river", "like a picture scroll" and "like an epic", so we only need to make similar figurative sentences. You can write fifty years like a song, fifty years like a stadium, fifty years like a play, fifty years like a road and so on. (2) The former is lower and the latter is higher. It can be seen from "there is a torrent and a slow flow" and "there is a cool color and a warm color" that the former is gloomy and the latter is convex, so we must pay attention to this feature when drafting new sentences. In contrast to the above, you can write "bass with treble", "mistakes with success", "calmness with climax", "bends with straightness" and so on. (3) care before and after. Long River Forever refers to "there is a long river" and "the picture scroll has just begun" to take care of the picture scroll, so the sequel should also take care of the above contents, such as "the music is getting more and more climax", "the game is getting more and more intense", "the drama curtain is slowly opening" and "the road leads to the distance".