The first to enter the shaft were some micro-robots. Most of these micro-robots were about five centimeters long, closely resembling six-legged spiders. At this size, the robots not only retained reconnaissance capabilities but also had a certain degree of information processing abilities.
At the same time, a type of linear robot also entered. This robot could easily be mistaken for a multi-legged creature like a house centipede. These special robots were actually data lines, with electronic muscle fibers wrapped around their exteriors—a lower-tier product of advanced synthetic muscle fibers, rarely used in a Martial Artist's body but sufficient for civilian use or on noncombat equipment. On the outside were pairs of mechanical legs. It was one kilometer long, with signal transmitting and receiving devices at both ends, capable of pathfinding and maintaining smooth communication underground.
