First, the original poem "Mr. Hu Yin's Wall" contains four sentences, each with seven words, so it is called a seven-character quatrain, referred to as a four-character poem.

The whole poem is as follows-the eaves are long and clean without moss, and flowers and trees are planted by hand. One water protects the field and surrounds the green, and two mountains send green.

Second, explanation, title explanation: "Mr. Hu Yin's wall" refers to the wall engraved on Mr. Hu Yin's home. Mr. Hu Yin was a neighbor of the poet Wang Anshi when he lived in seclusion in Jiangning (now Nanjing, Jiangsu). His name is Yang Ji, and "Mr. Hu Yin" is his nickname.

Interpretation: The thatched eaves that are often cleaned are so clean that there is no moss at all, and the flowers and trees are planted by the owners themselves. A stream twists and turns among the green fields, and two green hills seem to have pushed open two doors, bringing a dazzling green.