On July 14, 139 years of the cosmic calendar, a search fleet of the Celestial Tiger finally discovered the existence of the Xuanwu fortress group, and they immediately reported to their superiors, and the Tiger Fury understood that his troops had finally discovered the location of the enemy's home planet, and ordered the whole army to go out and march towards the Xuanwu Star Zone.

Sun Tiejian also ordered the whole coalition army to withdraw to the fortress to rest, the Tianhu Army has discovered the location of the fortress group, and there is no point in continuing to fight, so it is necessary to withdraw first to rest for a period of time, and only after recuperating can you continue to fight, the future will usher in a very difficult fighting years, which all the soldiers have been mentally prepared.

In the Vermilion Bird Star Area, the people of the Yanhuang Clan are stepping up the mining of various minerals, and a large amount of metal is put into the liquid metal layer of the fortress, now, the thickness of the liquid metal layer of the fortress has reached forty kilometers, which has exceeded the original design, the original can only withstand the attack of the thirty-first main gun, and now it can withstand the attack of the thirty-third main gun, plus the armor and defensive formation in the fortress, the attack of the thirty-sixth level can no longer hurt the fortress, it can be said that the fortress is stronger than the original design。

Located at the bottom of the spoon of the Big Dipper, the Tianji Fortress is the most front-line fortress, and Sun Tiejian set up the commander-in-chief here, and in the command room of the Tianji Fortress, Yang Tiehui introduced the Xuanwu Fortress Group in detail to Sun Tiejian and a group of senior generals.

"The size of the Xuanwu fortress group is the same, the diameter of the fortress is forty kilometers, the thickness of the liquid metal layer on the surface is forty kilometers, the total diameter is eighty kilometers, the total weight of the whole fortress reaches 256 million tons, the gravity on the surface is five .four times that of the earth's gravity, and the internal gravity is ten times, which is also suitable for everyone to cultivate. ”

"The armor thickness of the fortress reaches ten kilometers, all of which have been refined through our clan's refining method, and the defense is very strong, plus the various formations we have installed on the armor, plus the liquid metal layer, the defense of the whole fortress has reached level thirty-six, and in the time of war, open the Xuanwu Great Array, summon the Xuanwu clone, and the defense power can be as high as level thirty-nine. ”

"We have adopted the space formation method to expand the internal space to a thousand times, that is to say, the original diameter is only twenty kilometers, we have expanded to two thousand kilometers, and inside, we have enough space to install warships and various living facilities and other energy systems, and even include various production lines, so there is absolutely no need to worry about space. ”

"The energy system of the fortress is divided into two parts, one part is its own poly array, these poly elements can endlessly absorb the free energy in the universe and become a part of the fortress energy, and the other part is the hydrogen and oxygen generator installed in the core of the fortress, although the power of the hydrogen and oxygen generator is not too high, but we have installed a large number, and it can be recycled, and the power per hour is as high as 100 billion kilowatt hours, and the excess energy is usually stored in the storage array, and after the storage of the yuan array, the extra part will be stored in the creation array and the spar array, and we have these energy reserves, even if the enemy army is attacking continuously for several months, it will not be a problem. ”

"The firepower of the fortress is mainly in two aspects, one is the main cannon, each fortress has twenty main guns, these main cannons are usually not exposed, and when it is necessary to use it, use the formation to separate the liquid metal layer and expose the main gun channel, and you can attack the enemy. The power of these twenty main guns can only reach level 35, and they are distributed on the surface of the whole fortress, basically on the side of facing the enemy's attack, and they are installed after our calculations, and there are no dead spots in the shooting. The firing frequency of the main gun is one round per minute, which is already our limit, and it will take time for us to develop a stronger main gun. As for the frequency of the launch, our research is already somewhat eyebrow-raising, and I believe that it can be solved in fifty years. In addition, there are 3,000 secondary guns with a power of 32 levels, which are mainly used against the small warships of the enemy army that are relatively weakly defended. ”

"Because our army does not need a variety of exits, therefore, our fortress has no exit at all, and everyone needs to use the space to jump out of the fortress by themselves, which also avoids the enemy from using the gate of the fortress to attack, and also reduces the danger of the fortress being breached, of course, this also causes some trouble for our access, but, all things considered, we still use this design. ”

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

After listening to Yang Tiehui's introduction, Sun Tiejian said: "Tiehui, you have worked hard all these years. "What did the third brother say? What did you work hard to block the enemy's search all these years? I just moved my mouth, what hard work is there? But, third brother, the next thing is up to you. ”

Sun Tiejian nodded and said: "The enemy army should only come this time from the Fifth Front Army, it will not be too strong, with their current strength, they will not be able to capture our fortress, but they will not dare to cover it next time, and, Tiehui, you have to buy time, and study more weapons that can kill and injure the enemy army in a large area, in the face of the huge number of enemy troops, we can't just rely on the main artillery." ”

Yang Tiehui smiled bitterly, nodded and said: " I understand what the third brother said, it's just that large-scale weapons of destruction are not easy to study, our army's current strength has reached a bottleneck, if we can break through the past, then the strength will naturally go to the next level, if we can't break through the past, then I'm afraid we will have to stand still, it's just that this bottleneck is not easy to break through, it needs our all-round breakthrough, so I can't say how much time it will take, it may be one or two hundred years, or it may be one or two thousand years, everything depends on our efforts, but this breakthrough is not just based on hard work。 ”

Indeed, the Yanhuang Clan's current development is too fast, one of the most important reasons is to get some of the technology of the Heavenly Tiger Empire, with these advanced technologies, coupled with the knowledge of the Yanhuang Clan's formation and cultivation system, the two are combined, and they burst out with amazing strength, but, after all, the Yanhuang Clan has not been revived for a long time, and a lot of knowledge is not able to keep up, and a lot of scientific and technological knowledge is just known but not known why, so it is not so easy to go further, it will take a long time to supplement and improve all aspects of knowledge, and lay a foundation that is already somewhat empty, so Yang Tiehui's estimate of two hundred years is still fastIf it is a little slower, it is impossible to say for one or two thousand years, or even three or five thousand years, and there is no way to fake the problem of science and technology.

Sun Tiejian said: "I understand, everything will be left to you." "Third brother, don't worry, I will work hard to be able to research a better weapon as soon as possible." "Okay, I fully support this aspect, if you want people, I will give people, if you want things, I will give things, in short, work hard." ”

Zhang Zeshan also told Sun Tiejian about the development of the rear: "In the past 30 years, our clan has grown to more than 5 million, the natural god clan has also increased its population by more than 4 million, and the population of other races has also increased some, but the number is not much, the Wu clan is the least, only 5,000 people have increased, on the whole, the development of the population is still relatively fast, and these young people are improving, it is estimated that they will be able to go to the battlefield in another fifty years, and then they will be able to add a lot of new force to us." ”

"In terms of logistics construction, we have invested heavily in production, new warships are constantly being produced, a large number of minerals have been mined, and the personnel of the Academy of Sciences are constantly making all kinds of magic weapons, as well as elixirs, and the current reserves are enough for us to use for more than ten years. ”

"We don't have any problems with other facilities such as education, the children are growing up very well, and we are able to give them the best education and living standards, so we don't have to worry about that. ”

Sun Tiejian patted Zhang Zeshan on the shoulder, and said with a smile: "Zeshan does things, of course I am relieved, but there are too many people, and we will have problems in the future, Zeshan, you still have to find a way to find a new star area to settle our population, in case the fortress is breached, then it will not be so easy for us to fight guerrilla warfare in the future, please consider this." ”

Of course, it is easy to get a backsource and sufficient logistical support when the population is large, but it is also easy for too many people to form a burden, once the population reaches more than 100 billion, it is not so easy to fight guerrilla warfare, so Sun Tiejian reminded Zhang Zeshan.

There is absolutely no unbreakable defense line in this universe, this is clear to everyone, the Xuanwu Fortress is indeed very powerful, but no matter how powerful the fortress is, there will be a day when it will be breached, it may be a year later, or it may be a hundred years or even a thousand years later, therefore, it is absolutely not wrong to prepare early, otherwise, it will be too late to wait until the fortress is breached and then prepare to move.

Zhang Zeshan nodded and said, "The third brother reminded me correctly, I will pay attention to it." "Hehe, you guys, third brother, I don't worry, okay, let's go and prepare, we want to welcome guests, we can't be without a little preparation." That would be too much of a loss of my Yanhuang tradition of hospitality. "Everyone is laughing, they are all going to prepare, and after so many years of fighting, it is time to vent well.

On September 12, 139 years of the cosmic calendar, the vanguard of the Fifth Front Army arrived at the area of 90 million kilometers in front of the Xuanwu Fortress, but this vanguard force was very unlucky, so that the Yanhuang tribe was caught off guard at the beginning, and they were also considered to have lost great luck.

Theoretically speaking, it is 90 million kilometers away from the enemy, and this distance cannot be attacked even if the enemy wants to attack, and it should be a very safe area, because even if the enemy attacks, it will take more than ten hours to reach the attack distance of the main gun, so the vanguard of the Tianhu Army is also careless, thinking that there is no danger, therefore, in the process of jumping, even the force field cover is only opened to half of the strength.

The Yanhuang clan can't use common sense to guess, when the space-time earthquake was discovered, the coalition soldiers who had already prepared for it were dispatched at Sun Tiejian's order, and all of them made space jumps, reaching a place one million kilometers before the space-time earthquake, and then, summoned their own small warships and began to combine them into large warships, a total of 1.8 million ships, so that each of the tens of thousands of space-time earthquakes could be divided into several warships, and before the space cracked, the coalition forces were ready for all the battles. The reason why it is not combined into a heavy battleship but only a large battleship is because the firepower of the two is the same, the power of the main guns is thirty-two, and the strength of the heavy battleship lies in the relatively strong defense, that's all, this battle is an ambush war, of course, there is no need for such a strong defense, so only a large number of powerful firepower is enough.