easy: effortless, as opposed to "difficult": easy. Heyue: Easy.

Fei: Fluttering: Smoke flies and clouds converge. Clouds and gas: "Clouds and clouds gather in the evening." It's raining, ie it looks like rain, snow, smoke and clouds are blooming.

Explaining idioms

It's obvious and easy

Talking about jade scraps, smoke and fog

Tang poetry and Song poetry

How short the day is, how easy it is to be full of hardships for a hundred years. -Li Bai's "Short Songs"

The leaves are difficult to swing, and the lotus is easy to empty. -Luo Binwang's "Song of Songs"

It's raining, foggy and rainy, and the spring is shining outside the curtain. -Wen Tingyun's "Yang Chunqu"

At the beginning, the snow is faint, and the Russian cloud is dense. -Zhang Jiuling's "Feng He Sheng Zhi Rui Xue"