The main content of "20,000 Li Under the Sea"(more detailed)

20,000 Miles Under the Sea was a science fiction novel written by France's Verne in 1885. It was a first-person story about a submarine expedition by the scientist Nimo de Arrot in order to explore the secrets of the ocean. The protagonist of the story, Nemo de Arrot, was a famous oceanographer and diver. He received a mission: to dive deep into the sea to study a mysterious underwater creature. He took a submarine named Morris and began his adventure at the bottom of the sea. At the bottom of the sea, Nimo encountered all kinds of creatures, including giant octopuses, starfish, corals, fish, and so on. He also met some mysterious people, such as mages at the bottom of the sea, mysterious ruins of civilization, and so on. Through Nimo's exploration, he discovered a new marine ecosystem that was very different from the ecosystem that humans had previously known. In addition, he also discovered a mysterious energy that could be used to propel the submarine, allowing him to safely explore the deep sea. The whole story was full of scientific fantasy and the spirit of adventure, but it also reflected human understanding and exploration of nature.