There are several pages of leisure and good dreams in epigraphy. What are the artistic features of this couplet?

The greatest artistic feature of this couplet is pun. Originally, Jin Shi Lu and Yu Shu Ci were both titles, but both of them can be read together with the following words, so that the original meaning of Jin Shi Lu has a few more pages of leisure, while Yu Shu Ci has gathered years of national hatred and difficulties.