The further they walked in the passage, the dimmer it became. The surrounding temperature was also constantly dropping. It was still Spring in the New World, so the temperature was not high, but it would absolutely not drop to that degree.
After Chen Dao coughed a few times, he complained again, "I remember that the New World should at least be over ten degrees right now, so why is it so cold?"
"Because of all of the death energy," Xiao Lin said. He was more sensitive toward death energy than the others, and his eyebrows furrowed deeper and deeper because of it. Death energy was an incredibly cold and sinister energy, and the waves of undead had already caused him to realize something. Normally, being able to summon an undead army of such a scale meant that there would definitely be an incredibly dense death energy nearby.