In the depths of the mine.
It was indeed quite spacious, easily accommodating four galloping horses with room to spare.
Pitch-dark, devoid of any light.
However, foundation-building cultivators possessed night vision, so it didn't affect them much, although the air was filled with a pungent odor, slightly depleting their mana.
"It is extremely poisonous to ordinary humans, and Qi practitioners cannot stay here for long."
"The cost of mining is quite high."
Jiang Ding looked at the skeletons by the roadside.
Human and various spirit beasts', piled together, exuding a ghostly aura—there likely had been some yin attribute specters here not long before.
"Don't worry, Junior Martial Uncle!"
Accompanying him, Wu Makong quickly added, "Disciple has already asked the refining masters within the sect to design poison prevention items that ordinary people and Qi practitioners can use, ensuring not too many casualties among the mortal warriors and Qi mining workers."