They continued onward. By now, they had been traveling through this cave for nearly a full day and had likely covered dozens of kilometers.
Based on the average walking speed of a person, they should have been moving at five to eight kilometers per hour. Even using the lowest estimate—five kilometers per hour for ten hours—they had traveled roughly forty to fifty kilometers.
From this alone, one could see just how deep this cave went. An abyss truly was an abyss, with no exaggeration whatsoever.
If this cave were discovered by the world's geographers, it would probably become a place of wonders.
But to Rhine, this wondrous place was thoroughly detestable. The thing he had longed for day and night was within reach, yet he had been delayed on this damned path for so long. It was truly hard to put into words.
The Team Members also slowed as they went. Even as superhumans, they had to tread carefully in this cave. Naturally, they grew weary and began entertaining thoughts of retreat.
Fortunately, these people were loyal to Rhine, so they persevered.
As they advanced, the temperature gradually rose from more than fifty degrees below zero to above freezing, and it continued climbing. It had none of the physical characteristics a cave should possess, making everyone feel as though they had entered a fake cave.
Were they really still on a planet, or had they entered some fantasy world?
After walking for another half hour or so, the temperature had actually reached over thirty degrees above zero, even nearing the threshold of forty degrees.
Everyone found it hard to believe. They could only stop to rest and change out of their clothes into something cooler.
Naturally, while they were changing, Yan Kaixuan's eyes never left Nangong Xue. He stared at