C579 The Attack in the Mine!

As soon as he entered the mining area, Willett felt a strong stench of turbid air blowing at his face. The turbid air gave off a suffocating feeling, as if he was hiding in a blanket and breathing in it. The foul air and poisonous gas contained in the turbid air made Willett frown.

"Everyone, put on the respirator. The air here is very turbid