Although the entire journey wasn't particularly long, it took them almost 3 days to arrive at their current location, with most of the time being spent traversing the cave structures. The thin air and the nose-piercing smells would make even the most resilient men shout out in unbearable agony. In fact, Sister Hong was basically cursing and swearing for this whole section of the journey.
Despite the feeling that the descent was about to end, they still had to traverse through the cave for the remaining portion of the journey. At this moment, the ground began to level out, while most of the unbearable smells had already dissipated. Clearly, these were indications that they were getting closer to the source of wind that connected them to the outside world.