Among them, the translational water flows through the elemental gas cloud.

Among them, the Yellow River water under the mountain peaks collided with each other, and white water vapor hit like floating white clouds. From Li Daoyuan's Notes on Water Classics Longmen, it is a famous geographical work in ancient China, with 40 volumes. The author is Li Daoyuan in the late Northern Wei Dynasty.

The water mirror annotation is named after the water mirror annotation. The book Water Mirror is about 10,000 words, and the Notes on Six Classics of the Tang Dynasty says that it "draws water from the world, 137". Water Mirror Notes looks like water mirror notes, but in fact, it takes water mirror as the key link and records more than 1000 rivers and related historical sites, stories, myths and legends in detail. It is the most comprehensive and systematic comprehensive geographical work in ancient China. The book also records a large number of stone tablet ink and fishing songs and folk songs, with gorgeous words and beautiful language, which has high literary value. Because most of the documents cited in the book have been lost, Zhu has preserved a lot of materials, which is of great reference value for studying the ancient history and geography of China.