The Twelve Palaces have their own rules for doing things. For example, by releasing news through the Twelve Palaces, letting a large number of Dao Lords from the Twelve Palaces know that they need the fourth snow map scroll, many Dao Lords will help investigate the matter. In the end, the Dao Lord who successfully helped find the treasure and helped deliver it only got 10% of the thank you gift. The other Dao Lords were all in vain....