"Later, the technical department sent people to conduct a survey, and they indeed found the cave, along with the drawing board and daily necessities that the three had brought into the mountain."
"However, no people or bodies were found. After investigation, it was discovered that the cave's internal structure was extremely complex. The entrance was unremarkable, but there were numerous branching paths inside. A moment's inattention could result in getting lost. The technical department's personnel also detected hazardous gases inside the cave, which could damage the respiratory system and affect consciousness."
"They also discovered a dubious signal with the detectors. The signal wasn't very clear, but according to the on-site commander's judgment, there was a high possibility that something existed in the depths of the cave."
