So, Ling Feng had to keep moving forward without stopping to ensure the blood flow in his limbs remained unobstructed, preventing his legs from freezing.
After moving several hundred meters forward, a sudden loud rumble came from behind him, echoing through the passage, giving Ling Feng a strong sense of shock.
Turning around, Ling Feng couldn't help but gasp, as several dozen meters of the passage behind him had collapsed, with the rubble instantly freezing into ice crystals.
"Looks like I need to speed up; otherwise, if the collapse catches up to me, I'll be in real danger!" Ling Feng took a deep breath and quickened his pace.
Like this, Ling Feng continued moving forward. After about an hour, his speed gradually decreased, but he had also figured out the pattern of the collapses.
