It was called a Destiny Dish. In theory, it was similar to the compass in Jun Wu Xie's past life, where when one is lost, it could be used to differentiate one's bearings. It was not something rare and Jun Wu Xie had brought one as well the last time. But as they did not have a specific target before, they had not relied upon it much and only used it a few times when finding their way forward.
But now, things were completely different.
The complete eight maps when pieced together showed the location of the Dark Emperor and the entire terrain at the bottom of the Heaven's End Cliff that lay hidden beneath the misty fog and all its details was portrayed and clearly depicted within Jun Wu Xie's mind. With the direction locked upon the Destiny Dish, they were able to determine their current location upon the map and map out what they would expect to encounter in their way forward.