1. The original poem, "Shu Huyin's Wall" has four sentences in total, each sentence has seven characters, so it is called seven character quatrains, or Qijue for short.
The whole poem is as follows - The thatched eaves are long and swept clean without moss, and the flowers and trees are planted by themselves into a border. A river of water protects the fields and surrounds them with green, and two mountains with rows of gates bring in green.
2. Explanation, title explanation: "Book on the wall of Mr. Huyin" means inscription on the wall of Mr. Huyin's house. "Mr. Huyin" was a neighbor of the poet Wang Anshi when he retired to Jiangning (now Nanjing, Jiangsu Province). His name was Yang Ji, whose courtesy name was Defeng. "Mr. Huyin" was his nickname.
Translation explanation: The eaves that are often cleaned are so clean that there is no moss at all, and the patches of flowers and trees were planted by the owner himself. A small stream winds around the green fields, and two green hills seem to be two doors pushed open, bringing in a wealth of green.