The original work was at the bottom of Taiping Courtyard Lake

The secret at the bottom of Taiping Courtyard's lake 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. It was also the final location of all secrets. However, he did not reveal the details of what the Forbidden Door was hiding. Thus, the exact secret of the bottom of Taiping Courtyard was currently unknown.

In the original novel, Celebrating Years, the secret at the bottom of Taiping Courtyard's lake 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 specific secret content and details could only be understood by reading the original work.

In the original novel, Celebrating Years, the secret at the bottom of Taiping Courtyard's lake 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. The forbidden door might involve Fan Xian's identity in this world and the passage to the frozen world. The specific secret content and details needed to be revealed by watching the second season of Celebrating Years.

In the original novel, Celebrating Years, the secret at the bottom of Taiping Courtyard's lake 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 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. The Forbidden Door was related to Fan Xian's existence and his incurable disease in his previous life. The specific secret details needed to be read in the original novel, Chapter 121 of Celebrating Years.

The secret at the bottom of Taiping Courtyard's lake was the Forbidden Door. According to the original book," Celebrating the Years," Zhong Qingmei's letter to Fan Xian mentioned that there was a forbidden door at the bottom of Taiping Courtyard's lake. It was also the final location of all secrets. Taiping Courtyard was where Ye Qingmei had always lived. It was also where the Qing Emperor, Chen Pingping, Fan Jian, and the others had lived together when they were young. This secret might be related to Fan Xian's existence and his arrival in this world. Fan Xian was someone who had a terminal illness in his previous life. His spirit " crossed " into Ye Qingmei's son. This was explained by the novel as an experiment of the previous civilization. Other than the Forbidden Door, there might be other important secrets hidden at the bottom of Taiping Courtyard, but the specific details were not mentioned in the search results provided.

The secret at the bottom of Taiping Courtyard's lake was the Forbidden Door. According to the description in the original book," Celebrating Years," Ye Qingmei had written to Fan Xian before she died 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 had traveled when they were young. To Ye Qingmei, it carried many memories. The biggest secret of the Forbidden Door involved the reason Fan Xian and him had come to this world, as well as the most fair thing in the world about people's birth, aging, illness, and death. The reason Fan Xian was able to transmigrate to Ye Qingmei's son was because he had suffered from an incurable disease in his previous life. This book explained that this was an experiment from the previous civilization. In short, the secret at the bottom of Taiping Courtyard's lake was the Forbidden Door. It involved Fan Xian's birth and the experiments of his previous life.

The secret at the bottom of Taiping Courtyard's lake was the Forbidden Door. According to the original book," Celebrating the Years," Zhong Qingmei's letter to Fan Xian mentioned that there was a forbidden door at the bottom of Taiping Courtyard's lake. It was also 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 lived together when they were young. As for the specific content and meaning of the Forbidden Door, the search results did not provide any more information.

In the original novel, Celebrating Years, the secret at the bottom of Taiping Courtyard's lake 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. According to the description in the novel, the Forbidden Door might have something to do with Fan Xian's identity and the way he came to this world. Fan Xian was a successful product of Ye Qingmei's experiment. He had modern memories and advanced technology. Opening the forbidden door might trigger a series of changes and imbalance. Ye Qingmei's laboratory and modern technology equipment could also be hidden behind the Forbidden Door. In short, the secret at the bottom of Taiping Courtyard was an important puzzle in the story. The readers needed to read the novel to understand more details.

In the original novel, Celebrating Years, the secret at the bottom of Taiping Courtyard's lake 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 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.

In the original novel, Celebrating Years, the secret at the bottom of Taiping Courtyard's lake was the Forbidden Door. In her letter to Fan Xian, Ye Qingmei mentioned that there was a forbidden door at the bottom of Taiping Courtyard's lake. It was also the final location of all secrets. Taiping Courtyard was the place where Ye Qingmei had always lived. It was also the place where the Qing Emperor, Chen Pingping, Fan Jian, and the others had lived together when they were young. To Ye Qingmei, that place carried too many memories. To be specific, the Forbidden Door could be a laboratory with modern technological equipment, such as mobile phones, navigation, computers, etc. However, in order to understand the truth of the Forbidden Door, one needed to enter the Dark Door and go to the deepest part of the Earth to finally uncover the truth of the experiment and seed that Ye Qingmei had mentioned.