Despite reuniting after a decade, Yi Yun and Jiang Xiaorou did not have the time to engage in reminiscence. They were still in the Soul Tomb, and facing the hostile Blood Moon. Against so many Yin specters that were about to awake, they needed to immediately head to the Yin specter's slumbering grounds, and destroy everything within it.
There were layer after layer of defenses for the protection of the Soul Tomb, making it extremely secure.
The large array outside the Soul Tomb isolated the interior from the outside world. In the slumbering grounds of the Yin specters, there were spatial mazes and numerous illusion arrays hidden with them. Even the entrance to the Yin specters' slumbering grounds changed frequently. Even with the masked man's memories, it would be very time consuming to pinpoint the exact location of the slumbering grounds.
