Supergirl is a popular character in fanfiction. Writers love to explore her powers, her dual identity, and her relationships. Her superhuman abilities make for exciting action scenes, and her kind heart makes her a beloved hero in many stories.
If Barry kidnapped Supergirl in fanfiction, it could be a really interesting plot twist. Maybe Barry has been affected by some sort of red kryptonite - like substance that makes him act out of character. This would lead to a conflict between the Flash and Supergirl's friends and allies. They would be confused as to why Barry would do such a thing.
One inspiring Supergirl story is her fight against powerful villains to protect Metropolis. She uses her super strength, flight, and heat vision to keep the city safe. For example, when a group of alien invaders threatened the city, Supergirl was the first to stand up and fight them off, showing great courage.
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.