Spiritual Treasure Lord was the most idle, and having been defeated in the divine enthronement among the Three Pure, he was also the weakest. The troublesome matter of mentoring disciples was likely to fall upon him.
"During the divine enthronement, only the Mother of Non-Duality from under the Spiritual Treasure Lord did not ascend to the Canonization Altar. Could my elder sister Wusheng, be the Mother of Non-Duality?" Daoist Equal to Heaven pondered in his heart. This thought made sense; having escaped one calamity, she was the final spark for the Sect of Interception. It wasn't impossible for the Spiritual Treasure Lord to let her reincarnate to cut off the karmic forces attached to her.
When Daoist Equal to Heaven arrived at the gates of Biyougong Palace, he was stopped by a Child who said, "Where does the Daoist come from? The Yuan Shi Immortal Monarch is preaching in the Jade Pure Sky, this is the Upper Pure Heaven!"