Snowflakes are falling under the street lamp, and the sky is gray. What's wrong with having a bottom line

The grass is clear and the rain is shaking, and the earth is gloomy.

One-to-one correspondence between the first couplet and the second couplet, snow to rain, sky to ground, gray to gloomy, highlights the gloomy weather.

Couplets, also known as antithesis, door-to-door, spring stickers, Spring Festival couplets, couplets and so on. It is a antithesis written on paper, cloth or carved on bamboo, wood and columns. The antithesis of couplets is neat and even, which is a unique artistic form of Chinese.