In the deep underground cave, the temperature was very low, roughly four or five degrees.
Such a low-temperature environment was not suitable for biological survival. The tunnel also appeared very clean, devoid of any peculiar little bugs.
The intricate tunnel system resembled an underground maze, without any markers. The intense electromagnetic interference rendered all detection and scanning equipment useless.
Yet none of these could block Gao Xuan's Spiritual Power. Even with strong interference, he could always find the correct path.
After walking along the tunnel for two hours, descending dozens of kilometers underground, Gao Xuan arrived at an incredibly spacious cavity.
The enormous cavern was as large as dozens of stadiums, with the dome above reaching over a thousand meters high. The air was filled with fine silver light, illuminating the gigantic space brightly.
Spacious and bright, that's the most immediate feeling the cavern gave.