Magistrate Sun brought the three treasures back to the Azure Dragon, "Your Majestic, have a look." What Magistrate Sun was most concerned about was the Beast Horn, the so-called "mission item" that Burning Hillock had specifically requested, which might reveal a clue about his origin.
Magistrate Sun's conclusions about this treasure were three-fold: First, it must be a treasure from before the Heavenly Track Reversal; second, the main function of the treasure is to anchor the void. Magistrate Sun suspected that if there was a corresponding method, it might even anchor any void; the third one was that the horn might not be a "beast" horn, but a treasure horn from one of the Bai Clans - for some race, it might be an organ.