Su Xiao's gaze swept around him, Bubu Wang, A Mu, and Bennie were nowhere nearby.
Built from volcanic rock, the black chimneys towered into the sky, with thick smoke billowing out, this smoke was a bluish-black color, and you could vaguely see sparks within it.
As the thick smoke drifted to the sky, the sulfur smell in the area grew stronger. There were nearly a hundred of these giant chimneys, each several meters thick, around the city of Fanluo.
With such large-scale exhaust emissions, the surrounding environment should have been heavily polluted by now, but in reality, it wasn't the case. Although there was a sulfur odor in the air, the oxygen levels weren't low, and there was even a faint sweet freshness, like the aroma produced by burning some kind of plant.
