My first line is: "A few pictures, tigers don't bark, dragons don't sing, flowers don't smell fragrant, fish don't jump, what a good history!" Liu Bowen lost in thought after hearing this. This couplet looks easy, but it can't be revealed. I hope Zhu Yuanzhang will give him some time to think about it. Zhu Yuanzhang smiled and agreed to Liu Bowen's request. Three days later, Liu Bowen said to Zhu Yuanzhang, "I have been thinking hard for a few days about the emperor's upper line, and finally I thought of the lower line." The second part: "A game of chess, the car has no wheels, the horse has no feet, and the gun has no fireworks, which looks like a general."