Who can tell me the translation of this cursive king?

Prime Minister Zhang studied well and didn't do anything serious. At that time, everyone laughed at it. The prime minister is calm. A word a day, a pen and a book, full of paper dragons and snakes flying. Let my nephew record it. My nephew turned a deaf ear when the waves were dangerous. He took the book and asked, "What is this word?" The prime minister has been familiar with it for a long time, and he doesn't know it himself. He criticized his nephew and said, "If you hadn't asked earlier, I would have forgotten."

Prime Minister Zhang likes to write cursive script (cursive script), but he is very scribbled. People laughed at him, but he didn't think so. Once, he suddenly got a good sentence and asked for a pen and ink. His handwriting was scrawled and covered with paper. He immediately asked his nephew to copy the poem. My nephew copied a strange pen and was puzzled. He stopped writing and asked the Prime Minister what Zhang was reading. After careful identification for a long time, Prime Minister Zhang didn't recognize what he wrote, so he scolded his nephew and said, "Why didn't you ask me earlier and let me forget what I wrote?"