The background of the story is in the second year after Zhang Qiling entered the Bronze Gate. Wu Xie was led to discover Zhang Qiling's lies about the promise of the year, so he went to look for it. When the three reunited, Zhang Qiling finally revealed the truth of the secret. Only then did Wu Xie realize how big a mystery he was involved in. So under Wu Xie's persistence, the three of them were determined to find a way to end everything completely. In the follow-up, several major mysteries in the original text will be solved, using this as clues to peel off the cocoons and give the three people a complete ending.