章 453: Chomped to death!

In spite of the arachnid drones appearing like a totally different grade from those enormous mining machines of the RDA company; each gene and cell of these tireless and diligent kids, were manufactured for the sake of dealing with various kinds of mineral rocks. They were the refined products of numerous revisions of the arachnid race; mining, refining and transporting as one.

With them unearthing the underground passage, their efficiency probably wouldn’t be much lower than the heavy machineries of the humans. Yet after Sheyan had assembled a dozen plus arachnid drones to start excavating, they encountered an unexpected situation.

The work efficiency of these drones was actually relatively low!

During normal times when harvesting pandora crystals lodged within rocks, their movements were superbly agile and fluid. With a pair of large pincers repetitively crunching, they would easily chisel away the solid rock and extract the pandora crystals within.