What's the difference between Li Daoyuan's Water Mirror Notes and Water Mirror Notes?

Li Daoyuan's Notes on Water Classics was written in the form of Notes on Water Classics, but its content is much richer than that of Notes on Water Classics, and its text is more than 20 times that of the original. There are more rivers recorded in the book than in the original 1000. Originally, there were only 137 articles, but the notes on water mirrors reached 1252 articles. The book is rich in knowledge and beautiful in words; There are not only descriptions of geographical knowledge, but also some related customs and habits, which are lively and lively.