Yan Fei stepped forward and pulled the mechanical arm out of the hole, surprisingly finding that the arm was not heavy, weighing less than fifty kilograms. The break in the arm revealed highly delicate components inside, indicative of a very high technological standard.
However, the mechanical arm was rusted all over, and it was unknown how long it had been lying in the hole. With Yan Fei's knowledge, he could not identify the materials used to make the arm. As he applied force, the arm suddenly fell apart with a clatter, turning into a pile of rusted parts. It seemed that after potentially tens of thousands of years of corrosion, the arm was completely destroyed and would disintegrate upon any external force.