"Door of Idealism" is a special item. Although it can only be used once a day, it has become a portal connecting different spaces. Previously, Xu Huo used it in Bai Kou's spiritual world to successfully access another layer of space within her spiritual world. Although it's unclear if it will be useful, there's no better method at the moment.
First, use Spatial Power and Psychic Power to penetrate this passage, trying to find unusual power rays and traces of Psychic Power in the space—at least get some clues before the "Door of Idealism" can be of use.
But after more than ten minutes of attempts, Xu Huo made no progress. The passages under the municipality were like those in other parts of Flower City, appearing to be ordinary underground constructions with nothing particularly worth exploring.
