In Joy of Life's original novel, the secret underwater 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. The search results did not mention the specific content and significance of the Forbidden Door.

In the original story of Joy of Life, the secret underwater was the Forbidden Door at the bottom of Taiping Courtyard Lake. In her letter to Fan Xian, Ye Qingmei had mentioned that there was a forbidden door at the bottom of Taiping Courtyard's lake. It was also the final location of all secrets. The specific location of the Forbidden Door was not mentioned in the provided documents, so it was impossible to determine the exact location of the Forbidden Door.
In the original novel, the secret at the bottom of Taiping Courtyard was the Forbidden Door. In her letter to Fan Xian, Ye Qingmei had mentioned that there was a forbidden door at the bottom of Taiping Courtyard's lake. It was also the final location of all secrets. This secret might involve Fan Xian's background and the Qing Emperor's true identity. The specific details and content were not mentioned in the search results provided. Therefore, the details of the secret under the Taiping Courtyard needed to be read further.
In the original book Joy of Life, the secret of Taiping Courtyard's underwater life was a fortuitous encounter between Xiao En and Ku He when they were young. When Xiao En and Ku He were young, they had found a cave that led to the bottom of the lake near the temple. They swam into the cave and found a woman chained up. They worked together to open the chains. The woman told them that she was the guardian of the temple. Because the secrets in the temple would bring disaster to the world, she was sealed here by the gods of the temple. The woman told Xiao En and Ku He that there was a martial arts secret book hidden in the temple that could make people immortal. The two decided to betray the temple for this secret book.
In Joy of Life's original novel, the secret at the bottom of Taiping Courtyard was the Forbidden Door. In her letter to Fan Xian, Ye Qingmei had mentioned that there was a forbidden door at the bottom of Taiping Courtyard's lake. It was also the final location of all secrets. This Forbidden Door might be a laboratory with modern high-tech equipment such as mobile phones and navigation.
In Joy of Life's original novel, the secret at the bottom of Taiping Courtyard was the Forbidden Door. In her letter to Fan Xian, Ye Qingmei had mentioned that there was a forbidden door at the bottom of Taiping Courtyard's lake. This was the final location of all secrets. The Forbidden Door was related to Fan Xian's identity 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 Forbidden Door was believed to be a place that preserved important secrets such as the letters between Ye Qingmei and the Qing Emperor, scientific documents, and the truth of Ye Qingmei's death. Whether or not Fan Xian decided to reveal this secret and the possible consequences of revealing it was one of the important plots in the story.
The secret at the bottom of Taiping Courtyard was the Forbidden Door. In her letter to Fan Xian, Ye Qingmei had mentioned that there was a forbidden door at the bottom of Taiping Courtyard's lake. This was the final location of all secrets. However, the specific details and content were not mentioned in the search results provided.
The secret at the bottom of Taiping Courtyard was the secret of the Forbidden Door. In her letter to Fan Xian, Ye Qingmei had mentioned that there was a forbidden door at the bottom of Taiping Courtyard's lake. This door was the final location of all secrets. Taiping Courtyard was the place where Ye Qingmei had once lived. It was also the place where the Qing Emperor, Chen Pingping, Fan Jian, and the others remembered when they were young. However, the specific details and content were not mentioned in the search results provided. Therefore, the details of the secret underwater in Taiping Courtyard needed to be read further.
The secret at the bottom of Taiping Courtyard was the secret of the Forbidden Door. In her letter to Fan Xian, Ye Qingmei had mentioned that there was a forbidden door at the bottom of Taiping Courtyard's lake. This was the final location of all secrets. Taiping Courtyard was the place where Ye Qingmei lived for a long time. It was also the place where the Qing Emperor, Chen Pingping, Fan Jian, and the others remembered when they were young. However, the specific details and content were not mentioned in the search results provided. Therefore, the details of the secret underwater in Taiping Courtyard needed to be read further.
In the original novel Joy of Life, the secret of Taiping Courtyard was the Forbidden Door. In her letter to Fan Xian, Ye Qingmei had mentioned that there was a forbidden door at the bottom of Taiping Courtyard's lake. This was the final location of all secrets. Taiping Courtyard was the place where Ye Qingmei lived for a long time. It was also the place where the Qing Emperor, Chen Pingping, Fan Jian, and the others remembered when they were young.
The secret at the bottom of Taiping Courtyard was the secret of the Forbidden Door. In her letter to Fan Xian, Ye Qingmei mentioned the bottom of Taiping Courtyard's lake. There was a forbidden door at the bottom of the lake, and it was also the final location of all secrets. This secret might involve Fan Xian's background and the Qing Emperor's true identity. However, the specific details and content were not mentioned in the search results provided.