The fourth-level battleship has been completely improved in terms of the third-level battleship, the third-level battleship is at most an intra-planetary vehicle, while the fourth-level battleship has the ability to roam and shuttle in space for a long time.

Of course, the premise is that he has energy points.

This is actually not difficult to do, even if there are no zombies to kill in space, his solar panels can also play a role, after the transformation of the battleship, the continuation and function of the solar panels have been improved, and now it is no longer a "Xia Bai shoddy version", but a serious battleship function module.

At the earliest, when the battleship was still at the first level, Xia Bai still felt that it was very difficult to save a hundred energy points for the battleship to be upgraded to the second level, but now, things are easy to change, and the situation has already changed, with the upgrade of the battleship, killing zombies to accumulate energy points is like farming monsters, in most cases, it is just a matter of time and method.

And with the upgrading of the battleship again and again, and even when creating items for the first time, Xia Bai realized early that although the energy point is the core of the battleship upgrade and manufacturing items, if it is converted into the human currency system, an energy point is equivalent to the purchasing power of a hundred yuan, of course, all the items made by Xia Bai in the battleship are equivalent to the cost price and excellent performance, such as firearms, no matter what model, as long as it is a firearm created by a battleship, It's hard to have any quality problems.

Of course, although this is a comparison, this is just a comparison, the energy point is the energy point, it itself is a unique energy situation absorbed by the battleship, creating items and upgrading the battleship are actually put into its use, matter is conserved, and energy is also conserved.

Therefore, the upgrade of the ship and the final state of the upgrade are closely related to the number of energy points invested in each upgrade, you can buy a cheap bottle of mineral water for a dollar, but you can't buy a building for a dollar.

The reason is the same, because of this, there is not much difference between the second-level battleship that needs to be upgraded with a hundred energy points and the first-level itself, and the third-level battleship is also fragile, and only when it reaches the current fourth-level is the real beginning of the "upgrade road" of the battleship.

From the fourth level upwards, the fifth level requires 100,000 energy points, and the sixth level requires 1 million energy points.

Moreover, with the increase in level, the ability of the battleship's absorption equipment has also been improved, and it can now accurately absorb the energy points in the outer range of the battleship, and the range and accuracy of collecting and absorbing energy points will be improved.

According to Xia Bai's knowledge, after the battleship reaches level five, it will have a real energy point recovery device, and at that time, Xia Bai can pull out a team and let them take this equipment as their "coolies" to go out to hunt zombies and absorb energy points for him, and when the time comes, his speed of absorbing energy points will undoubtedly increase to a higher level again.

Xia Bai checked these messy things, and then began to retrieve the list of items that can be manufactured by the battleship at the moment, when he was at the third level and the second level, the things in the item manufacturing list were already varied, and after the fourth level, it was even more dazzling.

Moreover, some things may seem useless, but sometimes they can work wonders.

For example, the "powerful electromagnetic dog collar" before came in handy at this time, Xia Bai created a thing of this, which made Alpha transform and strengthen, and put it on the body of Luo Yuda, the unlucky captive of the Thirteen Kings that he had just captured, and tied the unlucky egg into a dumpling and locked it in the corner of the battleship.

At the same time, Xia Bai "defined" Luo Yuda's range of activity through a powerful electromagnetic dog collar, once Luo Yuda's body moved about a meter wrong with his current position, the collar would discharge suddenly, enough to make the person faint on the spot, unconscious.

In this regard, Xia Bai is also very frank and made it clear to Luo Yuda - if you dare to move around, don't say whether you can run away, if you are electrocuted a few times, you will probably not be far from dementia.

Luo Yuda calmed down at this moment, and he said: "There is no point in you arresting me as a hostage, even if you arrest the other thirteen kings, it doesn't mean much, it's better to put me back, the inside and the outside should be together, and I will help you take down the entire power of the thirteen kings, how about it?" ”

Xia Bai looked at the person in front of him, his eyes shining with cold light, as if he was judging how much of what this person said was true.

The Thirteen Kings are an organization composed of thugs, and it is the most basic survival skill to have a place in such an organization, and to be ruthless and cunning, and to rebel.

Therefore, the fundamental purpose of Luo Yuda's words at this time, in Xia Bai's opinion, was mostly just to get out.

When this product really returns to the territory of the thirteen kings of Changbai Mountain, it is estimated that it will be another rhetoric and practice.

But in Xia Bai's opinion, it is not a good choice and plan to defeat them from within the Thirteen Kings.

However, at this moment, Li Jingyang, who was on the other side, suddenly walked over and interrupted the conversation between the two - Black Eagle 13 seemed to have discovered something.

Li Jingyang directly handed the tablet in his hand to Xia Bai's hand, and motioned for him to take a look at the situation inside.

Xia Bai glanced at Luo Yuda, who was staring at them over there, and then his gaze fell on the panel handed to him by Li Jingyang, looking at the situation on this side.

The night has already fallen, in the picture is a commercial area of Yuanping City in the night, under a three-storey high-rise building, several streets are blocked by zombies, many survivors are trapped in this area, under the reflection of the lit fire, all are frightened faces, crowded, at least hundreds of people, and at the top of the high-rise building, there is also a crowd of people, a chaos, but someone is firing signal flares into the sky, desperately begging for help in this lonely and lonely city in the last days.

But for some reason, the footage sent back is not very clear, and sometimes there is even a brief interruption in the signal.

Xia Bai looked at the scene in the picture, but he was inexplicably excited, as if he was in a hurry to pick up money, and said, "Let's go, let's go now, to save people, there is no one, what should we use to build a survivor base?" ”

Li Jingyang stared at the goods in front of him, and said in his heart: Are you trying to save people or do you want to pull others to help you build a survivor base! Don't be so purposeful, okay!