Duke absorbed while paying attention to the surroundings. As he absorbed, the rock layers around him began to change visibly.
He still hadn't left to absorb more Golden Scale Celestial Iron, ready to escape at any moment.
After Duke extracted and refined about three tons of Golden Scale Celestial Iron, he knew he had to leave because the rumbling sounds from deeper within the mine tunnel could be heard.
This indicated that a large-scale collapse had begun, and if he didn't leave, he would be buried here.
He then directly surged ahead, stepping on the Metallic Yellow Sand, flying through the mine tunnel towards the surface.
As Duke flew upwards along the tunnel, he heard the rumbling behind him grow louder and closer.
He accelerated the Yellow Sand under his feet to fly out, moving extremely fast.
Having memorized the path and terrain on his way down, Duke didn't worry about suddenly crashing into anything.
