"Fat" means "fat".

Original poem:

In front of Xisai Mountain, egrets fly, peach blossoms flow and mandarin fish are fat.

Green bamboo hats, green coir raincoats, slanting wind and drizzle do not need to return.

Translation:

The egrets are soaring freely in front of Xisai Mountain, the plump mandarin fish are swimming happily in the river, and the peach blossoms floating in the water are so bright and full. The fisherman, wearing a green bamboo hat and a green coir raincoat, braved the slanting wind and drizzle.

Source: "Yu Ge Zi" by Zhang Zhihe of the Tang Dynasty

Extended information:

"Yu Ge Zi" uses white descriptive brushwork to outline a picture of the literati The poem "Yanbo Fishing" with everlasting charm was written by Zhihe in Huzhou. The governor Yan Zhenqing and other sages of the time fell in love with it, and many people made peace with it. It has fascinated future generations for thousands of years, and even spread to Japan. Even Emperor Saga (reigned from 804 to 823) planned to compose five poems. However, it goes without saying that the emperor of Japan cannot match the imitations of later generations. Even some great poets in later generations whose artistic achievements are far higher than those of the original poets cannot surpass the original lyrics.

The reason for this phenomenon is that the poet has lived in seclusion among the rivers and lakes for a long time, calling himself Yanbo Diaozu, and has a unique understanding of the beautiful meaning of it; the second is that the style of poetry has just emerged, which is very unique. Naturally, if later generations imitate, they will end up being imitations, which will not be as natural as the original creation.