Well, to determine if Meg is a true story, you'd need to look at its source and the author's claims. Sometimes stories are inspired by real-life but have fictional elements added. So, it's not straightforward to give a definite yes or no.
In the original novel, the secret underwater was the forbidden door at the bottom of Taiping Courtyard. In her letter to Fan Xian, Ye Qingmei mentioned that there was a forbidden door at the bottom of the lake. It was also the final location of all secrets. This forbidden door was related to Fan Xian's arrival in this world. It involved the story of Fan Xian's illness in his previous life and his spirit " traveling " to Ye Qingmei's childhood. To be specific, the Forbidden Door could be a portal to the temple, or an arsenal or laboratory. The current information did not mention what secrets were hidden in the specific mechanism. Therefore, the search results did not provide an answer to the specific secret under the water.
The secret under the water of Qing Yu Nian was the forbidden door at the bottom of Taiping Courtyard's lake. In her letter to Fan Xian, Ye Qingmei mentioned that there was a forbidden door at the bottom of the lake. It was also the final location of all secrets. This forbidden door was related to Fan Xian's arrival in this world. It involved the story of Fan Xian's illness in his previous life and his spirit " traveling " to Ye Qingmei's childhood.
The determination of whether an 'Underwater' story is real depends on its source and context. If it's from a reliable source reporting actual events, it might be real. But if it's for entertainment purposes, chances are it's made up.
" Twenty Thousand Miles Under the Sea " was a French story about an expedition ship led by a scientist, Nemo, in search of a " new continent " in the Pacific Ocean.
Nimo and his crew followed a large rift valley formed by a deep-sea volcanic eruption and passed through the seawater and marine ecosystem that surrounded the Earth. Finally, they arrived at a mysterious place--20,000 miles under the sea.
It was a huge underwater city covered by seawater, composed of buildings of various shapes and structures. It was said that this place was once a highly advanced civilization. However, in this mysterious underwater city, Nimo and his crew encountered various dangers and challenges, including underwater volcanic eruptions, shark attacks, biological traps, and so on.
Through constant exploration and adventure, Nemo and his crew finally discovered the truth of this underwater city and revealed the history and secrets of this civilized society. The whole story was full of scientific fantasy and the spirit of adventure, but it also reflected the exploration and pursuit of the unknown world by humans.
It wasn't a novel, it was a novel published in France in 1886. The novel tells the story of a diver named Nemo de Coubertin who explored the deep sea. It mainly described the underwater creatures and the deep sea environment, but also involved scientific and philosophical knowledge.
I'm not sure specifically as I haven't read it in detail. But generally, it could be about a character named Meg and her adventures, relationships, or personal growth.