[The Patriarch of the Demonic Way] Extra - the Ancestor Appears in the Mass Grave

This is an extra thought. What happened in the three months after Wei Wuxian lost the golden elixir and was thrown into a mass grave? How does he spend the day? Why wasn't he swallowed by the evil ghost? How did Gui Flute's Chen Qing come about? How did the Yinhu Talisman come about? Intention: Because I read books and watch TV shows, I was particularly curious about the three months that disappeared, so I came up with ideas to satisfy my curiosity.