After the Air Finger Division was completed, two new soldiers appeared in the tank factory, Black Hawk fighter and Nighthawk armed transport aircraft. Black Hawk fighter is an air force that has both reconnaissance and attacks on naval and land. The individual health and defense performance are extremely weak, but the single lethality is extremely terrifying. The Air Finger Division can dock four Black Hawk fighter jets that take off and land vertically. A group of such fighters can destroy one-third of the base vehicle's health with one attack. The Nighthawk armed helicopter is a military unit for transporting infantry units. The fuselage is equipped with a high-speed machine cannon, which is weaker than the machine gun bunker, and can only attack sea and land.

After the empty finger is completed, the building can be built with repair plants, combat laboratories, crack producers, prism towers, and walls. The most important of these is the combat laboratory. The combat laboratory is a building that improves the scientific and technological capabilities of the Allied barracks and factories. Once built, it can unlock most of the Allied troops, including some powerful auxiliary buildings.

The manufacturing cost of the combat laboratory is 2,000, the thickness of the armor is only light armor, the durability is 500 points, and the power demand is -100. After the construction of the air finger, Yi Xiaofan's power is only 55 points, so he must build another power plant.

After rebuilding a power plant at the original power plant, the power reserves were raised. In the eyes of ordinary players, Yi Xiaofan completed the combat laboratory that took 48 hours to build in one second.

Once the combat laboratory is completed, spy satellites and ore refiners are added to the list of defense buildings. The spy satellite can provide real-time satellite map monitoring range with a diameter of 200 kilometers, and can also add new soldiers: spy!

The ore refiner is a powerful auxiliary building. An ore refiner can provide 10% of the capital conversion bonus. In other words, with the ore refiner, a truck of ore can obtain an additional fifty funds.

For Yi Xiaofan, ore refiners are basically useless buildings. When the upper limit of the early construction is very small, players are more willing to use it to add an ore refinery, and the benefits obtained are much greater than that.

After building the spy satellite, Yi Xiaofan opened the map again, and countless red and white marks appeared on the map, and the red and white dots were marked with levels. He enlarged these white dots and found that most of them were system neutral rebels and some player bases, most of which were level one, and level two were quite rare. The red one was the Black Hawk Empire base. Except for a small number of level one, they were basically level two, and even level three and level four.

The second-level Black Hawk Empire base is the base he built when he grabbed the lottery mine yesterday. If Yi Xiaofan did not have a zero CD bug, he would probably not be able to kill one week of development. You should know that there are only twenty tanks in this base, and it takes two hours to produce a grizzly tank in the tank factory. When you finally save enough twenty tanks, it will probably not even be able to open the door of others. Even if it is opened, it will kill one thousand enemies and lose eight hundred of them. When you come back to build troops, the base will be repaired again.

Therefore, attacking the second-level base before upgrading is free, unless there are two or three people in team up to attack, but the kill rewards obtained by the three people are really not enough to make ends meet.

There is still a building quota left, and Yi Xiaofan plans to build another empty finger. When he sees the attributes of the Black Hawk fighter, he has a bold idea.

The Black Hawk fighter is expensive, with each 1,500 points of funds, and the two sets of fighter jets consumed tens of thousands of funds. The Black Hawk fighter jets adopt vertical take-off and landing, and the empty finger of an area of ​​1,000 square meters can accommodate four fighter jets to take-off and land at the same time. Yi Xiaofan walked to the apron, and the newly-departed Black Hawk fighter jets were resupply repaired here. The fighter jets were sprayed with black matte paint, and eight ground-to-sea missiles were mounted under the belly.

"It's awesome!"

Unfortunately, due to the upper limit of the building, Yi Xiaofan would have wanted to build a large number of empty-fingered units, and it would be better to occupy all fifty units. In this way, with just one wave of attacks, he could take over the entire second-level base.

All the Black Hawk fighter jets were in place, Yi Xiaofan began to experiment with his ideas and found a second-level Black Hawk Empire base with a distance of 120 kilometers. Yi Xiaofan directly chose to attack the base car.

As soon as the order was reached, a dull roar sounded from the entire base, and eight Black Hawk fighter jets were launched at the same time. Yi Xiaofan was excited in the scene.

After the fighter took off, it flew directly to the target. Nine minutes later, the Black Hawk fighter arrived above the Black Hawk Empire base. Yi Xiaofan observed the combat situation through real-time satellite images on the three-dimensional map.

The Black Hawk fighter jet lowered its flight altitude and began to approach the extreme low altitude. When there were still two kilometers away, Yi Xiaofan discovered that the air defense missiles on the four corners of the Empire Base had begun to adjust their perspective. When there was still one kilometer, four air defense missiles roared at the same time, and sixteen air-guided missiles headed straight for the Black Hawk fighter jet.

Dongdong!!

Before the first group of four Black Hawk fighters could launch missiles, they were hit by missiles. Two of them were hit by more than a dozen missiles and exploded on the spot. The remaining two were also hit, with only half of their health. After the first wave of air defense missiles, six fighters successfully approached and launched all ground-to-ground missiles at the same time. Twenty-four ground-to-ground missiles flew into the construction plant with white tail smoke like arrows off the string!

Boom boom boom boom!!!

Several large mushroom clouds soared into the air, and the construction plant's health immediately reduced by half. At this time, the second wave of air-to-air missiles flew over and soon hit the Black Hawk fighter jets that entered the return stage. After a burst of explosions, only two fighter jets escaped.

"Damn it!"

Yi Xiaofan never expected that the Black Hawk fighter was so crisp. With just this wave of attacks, he only killed half of the construction factory's health and lost more than six. This was because the opponent's ground troops were all Grizzly tanks. If there were more than five multi-functional infantry fighting vehicles, they might be wiped out.

Yi Xiaofan carefully calculated the damage. If all two sets of fighter jets hit, it could destroy two-thirds of the construction factory's health. In twenty minutes after Yi Xiaofan launched the second air strike, the construction factory's health would be expected to recover to 50% of the health. Now only six fighters can launch an attack, the second air strike cannot be destroyed, and three waves must be completely killed. In this way, if Yi Xiaofan wants to directly kill the construction factory and get experience, he will need at least more than 20,000 yuan to exchange for some experience.

"Why do you want to fire air defense missiles first?"

Yi Xiaofan suddenly thought of the air defense missile, but then shook his head. Although the air defense missile was one hundred points less durable than the construction factory, its defense type was heavy armor. Not to mention three waves, four waves could not be destroyed...

As expected, the Air Force can only afford to play with wealthy people...

Just like the plan that Yi Xiaofan thought, ordinary players can't afford it. Not to mention how long it takes to collect 20,000 yuan, it's long enough. A Black Hawk fighter jet will be built for three hours. According to Yi Xiaofan's double empty fingers, the fighter jet required for normal three-wave attacks will only be three or four days. After you complete the first wave of attack, before you can build the second wave of fighter jets, the health volume will be full.

"Twenty thousand is twenty thousand!"
Chapter completed!