Su raised his right leg and stepped on the male rat’s head. The male rat screeched and struggled about, but it couldn’t raise its head off the ground. Any large movement it made would result in intolerable pain from the steel pipe that pierced through its body. Even though it suffered such a severe injury, it still struggled for more than a minute before it finally stopped breathing.
Su’s pretty eyebrows moved. From his perspective, these vicious rats seemed to have developed even more endurance and vigor compared to a few months ago. This speed of mutation made him feel extremely uncomfortable.
Su did not decide to use the steel pipe impaled within the male rat’s body anymore. He fumbled about the cavern walls and pulled out a thread of wire. This was the illumination line that had been installed by the base, but now, it had already become useless. Su removed two meters of this wire and tore off the paint covering it, revealing the alloy threading within. He twisted the two electrical wires around his arms separately and continued to head into the darkness.
Even within the dark and rugged cavern, Su’s dark green eye and his plentiful experience could make out the vicious rat’s tracks. Not long after, he discovered the vicious rats’ lair. Within the rat nest, there were more than thirty large and small vicious rats. The larger ones seemed to have fully matured, while the smaller ones hadn’t even opened their eyes yet. He could see that there were three generations of rats here. The mature rats that seemed to have reached three months of age could give birth to another batch of infants.
“The bearing period has shortened by ten days.” This was what Su estimated in his head. The uncomfortable feeling he felt grew stronger.
However, his negative mood did not prevent him from using the alloy threading to lock down the vicious rat that was throwing itself over. Then, with a tug and shake, the rat flew through the air back in the direction it came from, only this time, blood frantically spurted out from its neck. It slammed into the cave wall, and after calming down, it no longer crawled back up. As the blood dyed alloy thread swept across the ground, seven or eight little rats instinctively bit down on it. However, the alloy thread shook slightly, and their heads were almost completely sliced in half.
A minute later, this nest of vicious rats was completely wiped out. Vicious rats were extremely territorial creatures. With this nest of vicious rats around, it was unlikely that there would be a second rat lair within a scope of a kilometer.
Su brought out a map and drew in a tunnel on top of an empty space. He marked the location of the rat nest and then carefully put away the map.
After following the cavern for several hundred meters, Su stopped for a bit at a place that caved in a bit. A seemingly man-made tunnel entrance was revealed behind a pile of earth. This tunnel entrance led to the deep, maze-like subway tunnels filled with danger. Reaching this point meant that the 500 yuan reward was already in his pocket. On the other side of this tunnel entrance lay the requirement for the reward which was even more enticing for him at the moment: the genetic modification medicine.
Su kneeled at the tunnel entrance and listened attentively.