In the midst of their busy lives, the lowest outdoor temperature still rose to over a hundred degrees. At this point, whether ordinary survivors or martial artists, almost no one went above ground anymore. Everyone was earnestly staying in the underground refuge center.
The gradually rising temperature on the surface, in turn, caused an increase in the temperature within the underground refuge center.
Thankfully, apart from Ye Liuyun selling that one ton of saltpetre, those who had hoarded saltpetre due to their strange plans were unable to bear the heat and began to use their supplies to help cool the refuge center they were staying in.
It wasn't because they were particularly selfless and wanted to help others, but rather because if they only used their supply of saltpetre to lower the temperature of their own living spaces,
