北宋神宗时,宰相王安石一天和众文友雅会,兴之所致,戏作谜诗一首请大家来猜。谜诗曰:“画时圆,写时方,冬时短,夏时长。”众宾客一时语塞。这时诗人梅尧臣缓缓说:“我也有一首谜诗,即是你的谜底:‘东海有一鱼,无头亦无尾,更除脊梁骨,便是这个谜。’”王安石听罢捻髯大笑道:“梅 In the Song Dynasty of the Northern Song Dynasty, Wang Anshi, the prime minister, and the allegiance of the literary world met with a grace. As a result, the mystery poem of the play asked you to guess. The mystery poem reads: “When painting a circle, when writing, when the winter is short, summer time is long.” At this time, the poet Mei Yaochen slowly said: “I also have a mystery poem, which is your answer: ’There is a fish in the East China Sea. There is no head or tail, but the backbone is the mystery.’” Wang Anshi heard it. I laughed and said: "May