"Boom~~~" An attack force that didn't know what kind of weapon it was, attacked the bunker in Liu Qingshan's base, and actually knocked out forty or fifty percent of its health at once. Damn, damn it, it's amazing, it's amazing! You can knock out so much health at once, the next step, how can I let Lao Tzu live!

However, fortunately, some of their own marines are not vegetarians. Although they are not a professional-level air defense combat force, after all, they have a numerical advantage, and their attack firepower is very dense. Da-da-da, da-da-da, dense anti-aircraft fire, almost at the same time, towards the enemy aircraft in mid-air, fierce attacks.

So, for a while, a big war was finally raging. In the middle of the air, the enemy's aerial units continued to bombard the ground indiscriminately. In the huge explosion, several of Liu Qingshan's marines on the ground were directly blown up, and when they fell to the ground, they were already dead and couldn't die anymore.

Later, after half a minute of fierce fighting, most of the marines on Liu Qingshan's side had been locked. Under such circumstances, Liu Qingshan knew that if it continued, then, it was certain that the remaining marines would all die. However, on its own side, it has not produced other air defense combat forces, so this means that its own base will suffer from enemy air strikes in vain.

However, what Liu Qingshan's armament did not expect was that under such circumstances, the enemy's airborne flying objects actually stopped the attack. He turned his head and slowly flew away from his base. After seeing this, Liu Qingshan couldn't help but feel very incomprehensible. Perhaps, realizing that this is a lone army after all, therefore, I don't want to make this battle too big.

Perhaps, for the enemy, their main purpose is only a temptation. And the real attack, in fact, has not yet begun. Once, after producing the defensive combat capability in Liu Qingshan's current base, they also achieved their goal, so they retreated first. However, Liu Qingshan knew that next, there would definitely be more fierce attacks waiting for him. Therefore, now, Liu Qingshan realizes that his most important task is to build his own airfield as soon as possible and produce enough air flight formations, which can only be suppressed by the enemy's air strikes by relying on air power. This is an unbreakable truth.

Fortunately, in the current situation, he has accumulated a considerable amount of crystal ore resources, and at the same time, he has also collected a considerable amount of gas springs. In this case, it will not be possible to have such a cramped situation of "overstretching" when building military installations.

Finally, the airfield was finally built as scheduled. Now, Liu Qingshan sees that there are actually only two kinds of fighters that he can produce now, one is a medical helicopter, and the other is a Viking fighter. Liu Qingshan knows that these two types of fighters are, in fact, the most ordinary fighters, but they both have a unique and quite important role. Yes, it is.

According to the information, Liu Qingshan has long known that this kind of medical helicopter can assist his marines in carrying out more effective operations. Because, as a medical helicopter with the ability to shake in the air, it can replenish its own marines on the ground in time when their health is lost. And that, in many cases, in many situations, is indeed quite important.

Now, after a period of hard work, Liu Qingshan has finally formed his own air combat force. Although the scale of this air combat unit is not very large, it should be said that it has been able to deal with some ordinary enemy air attack units.

This air defense combat force that Liu Qingshan has just formed includes 13 marines, five medical and health helicopters, and seven Viking fighters. Among them, it is obvious that the thirteen marines are actually tied to the five medical and health helicopters. Because, in the process of combat, once attacked by the enemy, then, it can be assessed that although their health has been weakened and received a certain amount of damage, for the medical and health helicopter above their heads, they will continue to replenish their health energy, so that they can continue to maintain their combat capability.

Of course, the real main force of air defense is still its own Viking fighters. Seven Viking fighters, it should be said, already have quite good anti-aircraft attack capabilities. Now, it should be said that, on the whole, whether it is a right attack or an air attack, Liu Qingshan has basically formed his own defense system. In other words, in this case, on the one hand, it will be impossible to enter one's own base lightly.

Moreover, now, with the passage of time, Liu Qingshan found that the crystal ore in his base, as well as the gas spring, had almost been mined. Under such circumstances, Liu Qingshan realized that he had to transfer his position in time, at the very least, to transfer the collection position of crystal ore and gas springs.

However, at this time, in this situation, whether he has the ability to leave his base camp and go outside the base camp to collect ore and gas springs is indeed a challenge for Liu Qingshan. Because, when the request for instructions from his side came back, he did not know much about the terrain, and he did not know very well what kind of combat effectiveness the enemy army had.

What Liu Qingshan is most worried about is that once he leaves the base camp and goes outside to collect ore and gas springs, then once the enemy army sends a certain number of combat troops to attack his own labor machines, with his current combat forces, he has no bottom in his heart whether he can save them.

Yes, in any case, in the current situation, I am only sure that I will defend my base camp. However, for other tasks other than this, to be honest, Liu Qingshan did not have this confidence.

However, despite this, the reality of the situation forced Liu Qingshan to make a choice. The reason is very simple, that is, no matter what, in his base camp, whether it is crystal ore resources or gas spring resources, they have all been collected. In this case, if you can't go to another place and continue collecting, it means that you will lose the source of ore and gas springs. In this case, the construction of their own base and the production of combat power will also be cut off. If that's the case, the loss will be great for yourself.

Yes, Liu Qingshan is very small, for a base, it can use continuous ore resources and gas spring resources, which is also the lifeline of this base. Therefore, after thinking about it again and again, Liu Qingshan still decided that although he needed to take some risks, he had to do something. Liu Qingshan finally decided to have his assistant Xiao Yiming, and he ~ was located near the nearest piece of crystal ore from his base camp base to collect crystal ore and gas springs. At the same time, in order to reduce the distance as much as possible, Liu Qingshan had decided to move his control center, that is, the main construction plant, to the area where the base was rapidly enlarged. In this way, the time spent on traveling to and from the new mine at the base will also be reduced. This improves the efficiency of their collection.

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So, after thinking of this, with Liu Qingshan's order, Xiao Yiming had already identified more than a dozen of his own labor machine qì people, and went to the mine closest to the base camp base, and then went. Of course, in order to ensure their safety, on the one hand, Liu Qingshan sent his own heavy tank unit to block the entrance and exit of the mine to the outside world. As a result, the enemy's ground combat forces were basically unable to enter the mine.

Because, to be sure, the enemy's ground combat forces, if they want to enter that mine, must pass through that canyon. And Liu Qingshan has already sent his heavy tank troops to seal the entrance and exit of that canyon most tightly. You must know that more than a dozen siege cannons, 10,000 cannons fired at once, no matter what kind of ground combat force, it is impossible for them to get out alive under the attack of those dozen siege cannons.

At the same time, in order to prevent the arrival of the enemy's air strike force, Liu Qingshan sent seven Viking fighters, in addition, seven marines, with three medical and health helicopters, together with the air defense combat force, also followed Xiao Yiming, stationed on the mine. Since then, in order to be able to protect Xiao Yiming, leading dozens of laborers to carry out ore collection and gas spring collection tasks there, it can be said that Liu Qingshan has almost spared no expense. Yes, it is. It can be said that Liu Qingshan has already used more than 70 percent of the troops in his hands. There is only one purpose, that is, I must find ways and do everything possible to ensure the safety of Xiao Yiming's more than 30 laborers.

In the initial period of time, it should be said that Xiao Yiming commanded more than 30 laborers to collect ore and gas springs in his second ore and on the ground, and in general, it was relatively safe and water conservatory. Largely undisturbed by enemy troops. Moreover, because on that mine, relatively speaking, various resources are relatively abundant, so during that period of time, Liu Qingshan's base, whether it is crystal ore or gas springs, has been greatly improved. Inventory levels are also increasing rapidly. In this way, Liu Qingshan felt very gratified.

Yes, in this case, with a considerable amount of ore resources and gas spring resources, then, you can make a big move and further build your own base. Because, you know, whether it is its own tank factory or its own airfield (to be exact, this airfield, called Starport). As the only military facility capable of producing flying units in the air, Liu Qingshan knew that it occupied an extremely important position in his entire base.

In addition to now, Liu Qingshan already has some air flight combat units, for example, Viking fighters, (that is, his own expert-level combat weapons in air combat) In addition, it is the kind of medical and health helicopter (this kind of medical and health helicopter, called medical transport helicopter, its main role, on the one hand, can provide a steady stream of health to their own infantry combat forces on the ground, replenish their health, so that they can continue to fight, To maximize their combat performance, in addition, this kind of one-time lifting and transporting imprints is still the most important air transport vehicle for Liu Qingshan.

It is capable of transporting a considerable number of infantry combat units from one place to another, quickly, and without any terrain restrictions. This is equivalent to the kind of double-edged helicopter that Liu Qingshan developed when he was carrying his home planet to fight. Yes, so to speak, the functionality between them is really similar).

In addition to these two air combat units that Liu Qingshan already has, Liu Qingshan knows that after his own upgrades, his own star port can also produce more advanced air flying units.

As pointed out by the four flying barrels, if you want to upgrade your starport, you can start from two aspects. On one aspect, that is, on the side of the starport, a scientific practice room was built. Only in this way can we produce taller, more advanced and better aerial vehicles. Among them, the Iron Raven, the Banshee and, of course, more importantly, the ability to produce Starcruisers. This kind of interstellar cruiser can be said to be the most powerful of all combat units. On the one hand, it itself has a very good defensive ability, and on the other hand, it has the ability to land on both ground-to-air and ground-to-ground attacks, so it is indeed the most important and cutting-edge combat weapon on Liu Qingshan's side.

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The above is its own starport, a route that can be upgraded. However, even if Liu Qingshan understands a little bit of information, there is another risk of upgrading his character. That is, the construction of nuclear reactors and the strengthening of the power set-up, thus achieving the effect of producing two combat units at the same time. This is basically the same as the boot camp of its own, as well as the tank factory (the so-called heavy factory). Yes, it is. What is certain is that whether it is their own boot camp, their own heavy factory, or their own Star Port A, as long as they can build a nuclear energy reactor as a new power next to them, and produce with them, then they can produce two combat units at the same time. In this way, the production efficiency of them has been completely tripled.

You know, in many cases, in many situations, especially when the fighters are very nervous, being able to double the productivity is indeed of very different value and significance. For this point, Liu Qingshan's heart is very clear.

However, what made Liu Qingshan feel very helpless was that these two upgrade routes could not be carried out at the same time. In other words, you can only build a scientific research institute through guò, or a scientific real room, and with the assistance of this kind of annex, your own starport can produce more high-end combat units, such as banshee fighters, iron crow fighters, and starcruisers. Alternatively, it is possible to build an outbuilding such as a nuclear reactor next to the port of the Debt Starport, thus achieving the goal of producing two combat units at the same time.

However, this means that it is certainly impossible to double the production rate of such high-end combat units. It is said that it was decided that it would not be possible to produce two Starcruisers at the same time, nor two Iron Ravens at the same time, nor two Banshee fighters at the same time. This means that either one Blood produces two types of units at the same time, or you produce high-end units at the same time, but you can't produce two at the same time. This is a contradiction, which makes Liu Qingshan feel very helpless.

Now, after spending a considerable amount of crystal ore resources and gas spring resources, Liu Qingshan has finally succeeded in building two important satellite port annexes, one is the nuclear energy reactor, and the other is his own combat research room. In modern times, it can be said that Liu Qingshan can either produce combat units in two sections at the same time, or produce high-end combat forces at any time, according to his own needs. How, of course, depends on the current situation.

In this case, it is certain that Liu Qingshan must choose to improve production efficiency. Because now, on their own side, what is most needed is still anti-aircraft firepower. And that kind of "Viking fighter" is just the most ideal choice for yourself.

As a result, Liu Qingshan gave an order, and the production plan of seven Viking fighters was successfully put into practice. Imagining what kind of attack capability his air defense force would have after being strengthened, Liu Qingshan's heart naturally became more confident.