With the wisdom of Decay firmly in hand, he knows An Jing's character very well, and is absolutely confident that An Jing will not forcibly awaken Subdue Evil, creating a 'mutually assured double defeat' scenario.
Because, in a double defeat, the Heavenly Demon still wins, especially if Subdue Evil can progress further towards demonic degeneration. Losing a hundred trillion more times would be a great boon!
However, while the Heavenly Demons have indeed figured out An Jing's character,
they have yet to understand An Jing's true wisdom.
"I see, throughout these many years, Subdue Evil has often returned to obscurity... I kept saying, all these hundreds of thousands of years, there have been strange traces in Subdue Evil's actions, but in my hands, they are chaotic like pieces of fragments."
