1, by different authors. The author of The Enlightenment of Melody is Che Wan Yu, a scholar in Kangxi period of Qing Dynasty. Li Yu, also known as Li Weng, was a writer and dramatist in the late Ming and early Qing Dynasties.
2. The content is different. Melody enlightenment mainly teaches metrical skills and writing methods of poetry, covering life scenes and daily affairs; Li's "Weng Dui Yun" pays more attention to the teaching of antithesis and rhyme, and contains rich allusions, covering flowers, birds, insects, fish, astronomy, geography, poetry and songs.
3. The purpose is different. The purpose of "rhythm enlightenment" is to let children learn to pair and master rhythm; Li Weng's rhyme aims to familiarize children with antithesis, rhyme and word formation, and lay a foundation for learning modern poetry.