The geography of mountains and rivers recorded in natural history is deeply influenced by Shan Hai Jing. For example, the first three volumes record mountains and rivers, foreign countries, foreigners, different customs, different products, different animals, different birds, different insects, different fish and so on. Roughly equivalent to the abbreviation of Shan Hai Jing, some of its contents are taken from ancient books and mixed with new rumors. There are not only five mountains, but also "overseas countries", which are called "China, Dai, Heng, Heng and Song". Zhang Hua is also proficient in alchemy. In addition to gods, shrines, statues and immortal trees, natural history also talks about the activities of alchemists and preaches methods of feeding and guiding. It can be seen that Zhang Hua's knowledge is very profound According to Wang Jia's Notes on Notes in the Jin Dynasty, Zhang Hua "is good at reading books with different visions and latitudes, adopting the world's heritage, and testing the supernatural from the beginning of the book, and what the world says is also true", so he wrote this widely read and bizarre book. Song Lishi's Continuation of Natural History and Ming's Supplement to Natural History can both be regarded as Zhang Hua's sequels.
I also read Shan Hai Jing, Yu Gong, Er Ya, Shuo Wen and local chronicles. Although well prepared, they all have their own contents, so I will briefly introduce them. If you don't see it, you can say it in the distance. Chen Shanchuan is like a statue, with good or bad omen. The fields of various countries are intertwined. After the Spring and Autumn Period, they invaded each other. Its land is not detailed, and the mountains and rivers are beautiful. In short, twelve countries. Naturalists can tell at a glance.
Although the book has not been included in Taoism, it has always been valued by Taoism, and the immortal materials are often cited by Taoist researchers.