Currently, the space tunnel Zhou Tian has been traversing continuously remains so well preserved despite most of its existence in the Ancient Ruins Space having decayed over time. The main reason for this is the thick layer of Spatial Magic Crystals formed on its inner walls. However, no matter how thick the accumulation of Spatial Magic Crystals in the tunnel, eventually, it will inevitably be exhausted given Zhou Tian's rate of extraction. When that happens, even if Zhou Tian does nothing, the space tunnel might very well collapse on its own.
In truth, because Zhou Tian didn't consider this aspect, he was entirely unprepared for such a situation. Under those circumstances, he would not have to wait for the space tunnel to collapse. His disorderly mining alone could cause the space tunnel to become unstable.
