Sure enough, two hundred kilometers away from this mother nest, there is a relatively large mother nest, which is somewhat similar to the mother nest where Liu Qian's entire army was wiped out before. There seem to be some squirting beasts and chainsaw beasts hidden under the ground.
But the size of this nest is not as large as the previous one where Liu Qian's entire army was wiped out. It should be only about half of that nest. The size of the nests of these indigenous monsters is related to the size of the local cobalt ore veins. The larger the cobalt ore veins, the larger the nests of the indigenous monsters.
It is said that these indigenous monsters feed on cobalt, and they can be found wherever cobalt ore exists. However, Liu Qian suspects that they are not the original natives of the HY32 planet, but have recently moved here. Otherwise, HY32 All the cobalt ore veins on the planet should be occupied by them.
Reconnaissance around the area also allowed Liu Qian to find several other mineral veins far away from the monster's nest, so he quietly transferred some of the machine workers there and opened a few more bases to increase the mining speed of the cobalt ore.
Just when Liu Gan produced a thousand Shatterers, three hundred Overlord Boomers, twenty Vomiters and ten Explosives, the nest a hundred kilometers away suddenly experienced abnormal energy fluctuations. According to Liu Gan's investigation, it was found that more than ten thousand machete beasts rushed out of the mother nest. The direction they were heading was the main base Liu Gan first built!
"They must have some kind of reconnaissance method that I don't know about, and they discovered my base, otherwise they wouldn't have launched an attack suddenly!" Liu Gan felt that something was not right.
But now is not the time to think about this matter. There are 10,000 machete beasts, and Liu Gan only has more than a thousand troops. There are no turrets in the base. If you are not careful, these machete beasts may bulldoze the base again.
Liu Qian quickly issued a defense order to the main base. Shatterer, Overlord Boom, Vomiter and Exploder found a suitable terrain and faced the direction of the attack of more than ten thousand machete beasts.
Liu Qian himself loaded three explosive plasma bombs and flew over the tens of thousands of machete beasts. He launched a power grid attack and killed hundreds of machete beasts. Then he quickly flew back to the base, loaded three more explosive plasma bombs, and repeated the process just now. Operation, when more than ten thousand machete beasts arrived in front of the machine army, only more than seven thousand were left.
The Great Steel Wall composed of Shatterers quickly formed a semicircle and surrounded more than 7,000 Machete Beasts. The Overlord's artillery fire roared, and the Vomiters exploded at fixed points. The Exploders then fired at the Machete Beasts that were squeezed together. The explosive plasma bomb was released, and the powerful electric grid broke through and burned a large number of machete beasts in an instant, but the machete beasts from behind immediately rushed over again, attacking Liu Gan's steel defense line without fear of death.
The enemy was outnumbered, and although Liu Gan's precise operations maximized his own combat power, in the end, two thousand machete beasts broke through Liu Gan's steel defense line and rushed towards Liu Gan's main base.
There was no other way, so Liu Qian could only pull out two-thirds of the machine workers from the main base, about 20,000 of them, and marched out of the base with welding guns and other tools, using his fragile bodies to form a formation to block the two thousand machete beasts. , delaying their attack on the base, Liu Qian continued to load explosives from the main base. The projectiles popped out of the grid and killed the machete beasts in a large area. Two thousand machete beasts waved their extremely sharp front claws, stabbing and knocking down 20,000 machine workers. Afterwards, Liu Qian's explosive bombs killed only about 300 of them.
Liu Gan pulled out the remaining 10,000 machete beasts, and with precise operations, he fired energy bombs and explosive bombs at the machete beasts from time to time. Finally, he killed all three hundred machete beasts, but the number of machine workers The number has also dropped to only 3,000, and two buildings in the main base have been destroyed.
"Grass!"
Looking at the remains of the robot soldiers on the ground and the burning main base, Liu Qianfei was about to explode with anger. Fortunately, he was heartless now and would not really be exploded with anger.
After calming down, Liu Qian sent out some machine workers and personally cleaned up the nearby battlefield. He brought a large number of monster corpses and robot remains back to the main base. After putting them back in the smelting furnace, he quickly refined a very pure He entered the arsenal and produced various arms again.
Liu Qian himself flew to the place where the mother nest is a hundred kilometers away to investigate. Now there are only dozens of machete beasts on guard near the mother nest. It seems that the mother nest has exhausted the mineral vein on the ground and can no longer produce any more. More machete beasts are coming.
After exploring this mother nest, Liu Qian flew to a larger mother nest two hundred kilometers away from this mother nest. There was no movement in that mother nest. It seemed that there was no preparation to attack Liu Qian's main base. This was the reason for the previous one. Brood Revenge.
It is impossible to guess whether there is any connection between these brood nests and how they are connected. If all the monsters in this brood nest come out to attack Liu Gan's main base, Liu Gan may have to move again.
Liu Qian quickly resumed production while monitoring nearby activities. With the corpses of more than 10,000 machete beasts and the remains of the original robot soldiers, Liu Qian quickly created a robot army of 6,000 people.
Liu Gan then sent a force of a thousand men to the mother nest more than a hundred kilometers away, bombed the turtle monster out of the ground, and after killing it, the body was also dragged back to the main base and thrown into the smelting furnace.
Machine workers did not need to use cobalt, ordinary metals were enough, and the number quickly recovered. Liu Qian searched for several small cobalt mines nearby, and continued to mine while detonating troops. When the time was right, he would go and get the approximately 50,000 cobalt mines. The nest of mixed forces was destroyed.
Good news came from the Mars base. After the efforts of the scientists, they created a controlled detection device that can detect changes in the content of coronium below the ground within a few kilometers. After sending the structural diagram to Liu Qian , Liu Qian's arsenal will be able to mass-produce such detection devices.
Detection devices can be installed on the slingers, adding a function to them so that robot troops no longer have to worry about ambushes below the ground no matter where they go.
Although Liu Gan can also detect underground ambush, in Liu Gan's conception of his robot army, they should be able to fight on their own without him, especially when the robot army becomes larger and larger in the future, Liu Gan It's impossible to provide vision and detection to every robot army, so it's better to give them their own detection capabilities.
Next, Liu Gan continued to open bases, explode troops, and put robot workers into mineral veins far away from the mother nest across the planet. He accumulated strength bit by bit. Once the number of robot soldiers reached about 50,000, he would Launch a new round of counterattack.