Chen Zheng's search didn't last long, because one thing interrupted their search operation.

"Enemy attack!! The Copper Mine Canyon mining site has been attacked! Dong Jie's eager voice sounded in the channel.

"......" Chen Zheng was stunned and gritted his teeth slightly: "We'll be there soon!" ”

……

The copper mining site was the first red canyon full of copper crystals that Chen Zheng discovered.

Prisoner of war camps were originally established here, where Imperial soldiers were responsible for collecting copper ore, which was then exchanged for food and various household supplies with the supply convoys that drove by every day.

With the discovery of a huge iron mine, the POWs moved with them. The good thing is that the quality of their life is getting higher and higher from then on, and the disadvantage is ...... It's that they can no longer see the blue sky and the sun.

After the miners left, the mining of the copper ore was handed over to more efficient mining robots – which, of course, are still remotely controlled and remotely manipulated by the workers to collect the ore every day.

As the demand for copper metal has gradually decreased, the number of active mining robots in the canyon has dropped from more than 20 at the beginning to an average of 2. The ore they collected was piled up in the humble camp that had been used as a prisoner of war camp.

There are also some defensive weapons in the copper mine, but compared to the mine, its defensive strength is much worse, and when the flying dragon attacks, the weak defense facilities are almost instantly cleaned up!

When Chen Zheng flew in with five Viking drones, the building was already empty...... In addition to the devastation on the ground, only the parts all over the ground and the green liquid spit out by the wyvern were "sizzling" and emitting faint green smoke.

"......" Chen Zheng piloted the fighter back and forth a few times, and after confirming that there was no other danger on the ground, he directly landed the Viking fighter next to the mine, put on a filter mask and summoned the lightsaber and walked towards the center of the battlefield.

"Be careful......"

"......" Chen Zheng didn't seem to hear the sound of the earphones at all, and walked straight to the most severely destroyed place in the entire mine.

Bypass torn barrels and avoid armor that has been corroded into a coland...... Chen Zheng went all the way to the core of the entire mine, where the zero-power conversion device was stored.

A large hole had been torn open in the metal plate that had been buried deep in the ground, and the zero-power conversion device that had been hidden under it was long gone, leaving only a huge pit in the ground.

"......" Chen Zheng took a deep breath.

At such a distance from the base, it is necessary to configure an independent power supply. But with a separate power supply, those damn bugs can smell and come to your door!

"It's Zero, they're coming for Zero." The glasses man's voice suddenly interjected into the channel.

"Well, but not all." Chen Zheng bent down, picked up the twisted arm of a collection robot from the ground, looked at it, and threw it back to the ground.

"It's also learning."

Chen Zheng muttered.

"Who's learning?" The glasses man's voice paused, as if he didn't hear Chen Zheng speak clearly.

"I mean, the mother...... It's learning our tactics. Chen Zheng continued, "There are only two collection robots that usually operate, and the others are parked in the warehouse. However...... The wyverns found the storehouse and demolished it, and killed all the gathering robots. ”

“…… This!? ”

"How so!?"

The glasses man and Dong Jie were surprised almost at the same time.

"It's also learning to weaken our production capacity...... It knows we need metal! Chen Zheng drilled his fist, and suddenly raised his head to look at the five Viking drones flying in the sky.

"Base, prepare 6 more cloudburst bombs...... Xiao Xiao and the Viking team return to the base to hang up the ammo and set off immediately! Continue to investigate near the equator and destroy new bases directly once discovered! ”

"Yes."

"Wang!"

"Also...... Spectacles. Chen Zheng took a deep breath.

"You command." The man in glasses bowed.

"Let's stop the research at hand...... I think we need a new set of electrical facilities. Chen Zheng had to suspend the study of the tidal gate and a series of important facilities again.

The "......" glasses man didn't interject and listened attentively.

"Thermal power generation, firewood is the best...... If you can't, use liquefied carbon. Chen Zheng thought about the principle of the generator on the earth, "If you don't understand, you can ask Uncle Xia directly." ”

"Yes." The man with glasses commanded.

There is no way to develop thermal power generation, after all, zero-to-electricity conversion devices are too expensive, especially zero crystals, the reserves in the base are extremely limited, and there are a large number of other demand gaps in addition to energy.

If it is a one-time investment for permanent use, as was previously laid out at the copper mine site, such a consumption is acceptable.

However, as the battle between humans and insects on the desolate planet intensified, it was not uncommon for all kinds of mines to be sneak attacked...... Chen Zheng doesn't have so many zero crystals to lose.

Thermal power generation is different, it is nothing more than some metal materials and man-hours...... There are metals on the planet, and although the working hours are tighter, as long as there are people, all this is not a problem.

In a state of war, cost-effectiveness is always the top priority.

"In addition, we must strengthen the defense level of the mine......" Chen Zheng muttered to himself as he stood among the ruins.

……

In the time that followed, the search team found several more large mushroom blankets.

What is worrying is that in addition to the missile-like flying insects that appeared before, more types of anti-aircraft weapons have appeared in the Zerg base again.

For example, a giant six-legged creature that can spew corrosive spore clusters 15 times the speed of sound - it has been named the "bun tank".

Or a giant serpent with wings that spews out tiny clouds of worms that corrode and devour anything that comes into their range, even if it's a sturdy Viking drone, and if it's covered by the cloud of worms, it's going to shed its skin if it doesn't die – a real delamination!

The emergence of countless new units made Chen Zheng and their destruction of the Zerg sub-base more and more inefficient...... However, with the expansion of the human base, from time to time, some mining sites will be attacked by wyverns who appear out of nowhere!

For a while, the war on the desert star completely entered the tug-of-war mode.

Today I will destroy your two sub-bases, and tomorrow you will destroy my two mines, flesh and steel continue to collide and annihilate in conflicts again and again.

In such a war, the insects are fighting more and more, and the technology on the human side can be said to be developing by leaps and bounds......

However, the human side is also feeling its own bottleneck more and more - there are too few people!

There are too few miners! There are too few monitors! And there are even fewer Viking pilots - only 12 talented Viking pilots have been singled out in the entire base! Letting other people fly Vikings will only make this expensive combat weapon lose constantly!

The shortage of manpower and talent has made the form of war increasingly severe.