This thing is like winning a lottery, something you only get once in a while. If you really want a promising method and don't care about the investment, just buy enough Abyss Tickets for the Heaven Realm and do it again and again until you get it. Someone in the Tieba posted a post and tried it 300 times, but it didn't show up. Every devil with a white brush was an angel with broken wings in his previous life, and God owes her.