" We will go to the Third Star Peak of the Shattered Star Peaks, from what is written on the map, the Third Star Peak is the highest Peak that we can climb before the qi starts to become too violent." Looking over the map of the Shattered Star Peaks, Xuan Hao decided that they would go up the Third Star Peak.
The map of the Shattered Star Peaks was not as detailed as the rest of the star peaks outside the main peak and second peak of the Shattered Star Peaks where it was impossible for someone below the Domain Lord Realm to venture.
The Reason Xuan Hao decided to go up the Third Star Peak with his disciples was not only because it was the highest peak that he could travel up together with his disciples, but also because the Third Star Peak was said to have many unique herbs and other plants growing on it.