Every "little trick" in the Lower Realm corresponds to a treasure mirror here. As long as the treasure mirror rises, it means that the trick has been cracked. Under the cover of the trick, everything said and done will be truthfully transmitted through the treasure mirror.
Originally, there weren't many treasure mirrors here, but over the years of the Heavenly Track Reversal, the Heaven Realm had nothing to do, so they cracked all the "little tricks." Unfortunately, there is no place to use it; the errands in the Supervision Tower have become insignificant. The Immortal on duty changes once every thousand years, and no matter who comes, they all sleep for a thousand years... However, today someone actually used this trick, and it happened to wake themselves up, hearing everything loud and clear!
