"Crunch-"

"Boom-"

This loud noise was everywhere in the woods, and towering trees were cut down and dragged to the main base, where they decomposed into ordinary energy.

When the number of swift mechanical insects reached thousands, Zhang Feng's courage was also much greater, and he no longer dared to develop from the wolf to the tiger, and began to do something to the towering trees around him.

In this way, the efficiency of energy harvesting is really doubled. The power of mechanical insects is amazing, as long as one mechanical insect can drag back a big tree that several people hug together, Zhang Feng was amazed.

The energy converter at the main base is like a bottomless pit, and no matter how much you throw into it, you can easily swallow it.

During this period, several waves of blinding beasts came to find fault, but they were all rushed up by the rapid mechanical insects, and with the help of insect pest tactics, they were killed by bullying more and less.

The most powerful of them were the six small dinosaur-like animals, they were not large, but they were surprisingly fast, even faster than the second-level rapids.

You must know that the speedy mechanical bug is known for its speed, and its manufacturing principle is based on biomimicry, which is based on the study of one of the fastest zerg combat units in the universe.

Fortunately, these six little dinosaurs came in two batches, three in each batch.

Rao is like this, and it also made Zhang Feng pay the price of more than forty first-level rapid mechanical insects, plus the losses from fighting other fierce beasts, the total number of rapid mechanical insects lost has reached nearly a hundred, which makes Zhang Feng, who thinks he is rich, also feel distressed.

In return, there are 36 primary energy sources, of which 18 are white, 10 are yellow, and 8 are orange.

The energy contained in it is the most orange and the least yellow, which is in line with the strength of those fierce beasts. After experiments, it was found that no matter how much energy was contained in the energy source, the evolved swift mechanical insects were all second-level, which made Zhang Feng puzzled.

According to the main base, it belongs to the same primary energy source, and there is no qualitative change between the amount of energy.

In the process of pioneering, the more powerful the beast, the more difficult it is to kill. This is not only difficult to deal with in battle, but also the stronger the strength, the higher the IQ seems to be, knowing that these mechanical guys are not easy to mess with, so they avoid it early. On the contrary, those who were weak, I don't know what to do, and they couldn't feel the aura of fear from the swift mechanical insects, so they rushed up...... The results can be imagined.

With the ability to protect himself, the first thing Zhang Feng did was to light a fire and barbecue.

The mushroom forest in the west has withered and grown again in the past few days, and it has been circulating several times, and there are no big monsters, maybe the giant centipede has already swam away, right? Zhang Feng was also a lot more relieved.

Choosing a strange wild boar that looked the best and had a blue coat, cut off a large piece of meat from the thigh and grilled it, watching the oil in the meat be burned out, dripping on the charcoal below, and the meat color was becoming more and more golden, Zhang Feng swallowed greedily next to him.

When he took a bite of the fragrant barbecue in his mouth, Zhang Feng burst into tears -- the life of Ru Mao drinking blood in the past ten days was finally over! Although there were no ingredients, this barbecue meat was unprecedentedly sweet in his mouth.

Looking at the bloody raw meat next to him, he was sick to his stomach.

Zhang Feng secretly vowed that he must work hard and never eat raw meat again in the future.

Even if you travel to this ghost place where you don't know where it is, you must have the desire to pursue a good life.

............

Using the 36 primary energy sources obtained, Zhang Feng evolved 34 second-level speedy mechanical insects, and with the addition of the original one, the number of second-level speedy mechanical insects increased to 35.

There is also a second-class mechanical insect and a mineral engineering vehicle. Like the evolution of the rapid mechanical bug, these two production units have not changed in appearance, but they are one size bigger, especially the mineral engineering vehicle, which is already seven or eight meters high, and has directly risen to nearly ten meters, which is extremely strong.

Although the mineral engineering vehicle has no offensive ability, just by virtue of this head, if it hits it directly, a slightly worse beast will not be able to stop it!

The way secondary mechanical insects collect has changed, there seems to be a division of labor between them, this only secondary mechanical insect is only responsible for large trees, it does not bite it off and carry it back, but sticks out a long straw-like thing from its mouth, and inserts it into the tree, and the big tree hugged by several people or even a dozen people shrinks rapidly at a speed visible to the naked eye, and in just a few seconds, it turns into fly ash and disappears.

The second-level mechanical insect will quickly select the next target, and after absorbing more than a dozen large trees in a row, it will return to the main base and insert the straw in its mouth into a small hole next to the energy converter, and continue to collect the energy after the energy is output......

With the hard work of more and more mechanical insects, the value of ordinary energy has skyrocketed, reaching a value of as high as 12,000.

In exchange, there was no grass left a few kilometers east of the main base.

Under the cover of 20 rapid mechanical insects, two mineral engineering vehicles drove to the foot of a mountain more than 10 kilometers away, and the mechanical arm and mechanical shovel were activated, and a large cave with a depth of two or three hundred meters and a height of more than 20 meters was dug in one day.

This kind of work efficiency, if those engineers on the earth knew about it, would definitely be ashamed to die.

Zhang Feng personally came to take a look at the cave and felt extremely satisfied.

"Begin to build sub-bases. ”

"The production of a sub-base will consume 5,000 units of energy, 10,000 tons of common metals, and 5,000 tons of synthetic metals. Sub-base production time, 24 hours. During the production sub-base, the production of all other units will be stopped, is it now confirmed that the production of the sub-base will be carried out?" asked the mechanical voice of the main base.

"Start production!" Zhang Feng did not hesitate.

Sharpen the knife and do not mistake the woodcutter. 24 hours, although it will delay the production of more than 100 units, but after having a sub-base, the productivity will be doubled, and the survival coefficient of oneself in this world can also be doubled, which is a great bargain.

............

The next day, Zhang Feng came to the cave that he had dug yesterday with a meteorite-like thing in his hand.

"Hey, it looks like the main base was like this before it was opened, right? The Atlanteans were really creative enough to design the newly produced base like this. ”

Zhang Feng said as he put the "meteorite" in his hand in the center of the cave.

"Sub-base 1, activate!"

"Drip-" With Zhang Feng's order, the "meteorite" made a soft sound, and at the same time there was a burst of red light, followed by a "hum!" sound, levitating, "gurgling......" sounded, and turned into a pitch-black crystal round building full of science fiction colors.

The whole process is exactly the same as the process of activating the main base.

Even from the appearance alone, there is no difference between the main base and the sub-base.

"Sub-base No. 1, energy reserves of 0, common metal reserves of 0, synthetic metal reserves of 0, production capacity, 150 basic combat units per day. ”

"It has a certain ability to defend against ground and air. ”

"There is a wormhole (a thin tube of space-time between distant regions of the universe) between the main base, and the two can travel freely within each other. ”

"Resources can be freely distributed between the main base and the sub-bases, and they can be transferred directly through the space connection points. ”