Lu Han has a strong sense of crisis, and the more than 20 million he earned from the lottery is not simply used to enjoy life, but to exchange it for dark coins and use the [Dark Holy Land], the only building in the game, to enhance himself.

After his morning lessons, after eating, and returning to his house, he began to consolidate the base, starting with the strengthening of the defense towers.

Since the base is upgraded to level three, towers can be upgraded again, and each upgrade costs 3 Fantasy Coins.

Ordinary defensive arrow towers can be upgraded to triple rapid arc towers, after upgrading, there will be three machine crossbows on the top of the tower, and the range and penetration will be stronger.

Lu Han counted, there were a total of ten ordinary arrow towers, and it cost 30 fantasy coins, all of which were upgraded to triple rapid arrow towers.

There are also ten air wave turrets, which can be upgraded to cold air wave towers, that is, the air bombs that are shot out have a freezing effect, and the upgrade of each tower also consumes 3 fantasy coins. Lu Han spent 30 coins, all of which were upgraded to air-conditioning towers.

All of them can be used to upgrade with so many fantasy coins, all because of the strategy obtained from the [Dark Holy Land], the harvest of brushing the thunder dragon horns in the Thunder Dragon Stream.

In other words, the endless stream of fantasy coins still comes from the [Dark Holy Land].

It's not a loss of the entire game area, and there is only one mysterious building.

Thinking that he was so lucky, Lu Han felt that if he was not good enough to use this building to mix up the Mingtang, he would be sorry for this building.

At this time, a total of 60 fantasy coins were consumed, and the 20 towers in the base were upgraded and renewed, and the effect was naturally powerful and domineering.

During this time, I went to brush the Thunder Dragon Horn every day and saved 420 pieces. It can be said that the growth rate is phenomenal.

Lu Han saw a new option in the main base, increasing the base size by +50%.

That is, the range can be expanded?

This is good.

But 300 Fantasy Coins are required.

Before, 300 fantasy coins was an astronomical amount for Lu Han, but now it is a matter of a few days, and it will be swiped out when he goes to Thunder Dragon Stream.

Lu Han did not hesitate to click on this upgrade, which was called [Territory Range Increase].

I saw that after the promotion, the outer city wall really expanded a large circle, and the originally cramped base instantly became spacious.

However, there is an obvious drawback, that is, the original three strategic trenches have been expanded due to the outer wall, and the three trenches have reached the base.

Lu Han went out to take a look, it didn't matter, he was physically fit now, and it was not difficult to dig a few fortifications on the periphery again.

There is also an option within the base to build walls, which cost 1 Fantasy Coin per meter, and the walls are two meters high and constructed from normal turns.

If you want to upgrade to a bluestone structure, you will need 2 Fantasy Coins per meter.

If you continue to upgrade to bluestone mixed rebar, you will need 4 Fantasy Coins per meter.

Lu Han calculated, the current circumference of his polar region is 140 meters, and the area is 500 square meters.

So, even with the most ordinary Turning Walls, you need 140 Fantasy Coins.

Lu Han didn't expect that upgrading the city wall would be so expensive, no wonder the initial state of his base didn't even have a serious city wall, just a simple wooden fence.

There are only 120 Fantasy Coins.

Lu Han didn't delay, and rode directly to the Thunder Dragon Stream on a mountain bike, and went to brush 60 fantasy coins to come back.

After this day passed, I went to farm fantasy coins every day for the next few days, on the one hand, in order to upgrade the city wall, and on the other hand, it was also to build a building [Dark Fighting Robot Workshop] refreshed in the heart of the [Dark Holy Land].

To construct this building, 50 Fantasy Coins are required.

This is the most expensive building so far, but Lu Han believes that there must be a reason why it is expensive. Moreover, the production of [Dark Holy Land] must be a high-quality product.

A week later, Lu Han had re-accumulated 530 fantasy coins. He spent 280 Fantasy Coins to upgrade the wall to a second level, which is a bluestone wall.

Although the height was only two meters, the iron thistle fence that Lu Han had purchased from the real world was kept above the wall, and this thing had been added to the height by half a meter. I believe that this is an insurmountable obstacle for most people. Unless someone can jump two and a half meters high and jump in directly from the outside.

However, 20 towers upgraded to level 3 await him. When you hit the ground, you will be shot into a sieve.

In addition to upgrading the city wall, Lu Han spent 50 No Fantasy Coins to build the [Dark Fighting Robot Workshop].

This is a pure black building, and Lu Han can reposition the defense towers and defend them with two defense towers.

At this time, there is only one thing produced in this new building, called [Dark Fighting Robot No. 1], which is priced at 100 Fantasy Coins.

And the level 3 main base, you can build up to 2 fighting robots No. 1.

Since there were exactly 200 Fantasy Coins left, Lu Han built 2.

The construction process was quick, and it left the factory almost immediately.

Lu Han summoned the [Wolf Assassin] Lin Helen into the base and studied these new robots with her.

Because it is the No. 1 product, Lu Han can't debug his appearance and height by himself, this is just a robot skeleton with unknown metal exposed, it is humanoid, only 170 cm tall.

A brief introduction to them is presented as follows.

[Dark Fighting Robot No. 1]: Aluminum alloy skeleton, driven by the heart of energy, has various attributes beyond the peak of ordinary humans, equivalent to a human with strength 12, agility 12, physical strength 12, and spirit 5. For players to use 100% loyalty, good at combat. Specific combat skills are developed by players using Dark Coins.

Lu Han looked at it again, at present, there is only one skill that the two robots can develop, called [Black Water Knife Method], and 100 fantasy coins are required for research and development.

Once developed, all Robot 1 will be able to enjoy it.

Lin Hailun said: "They should be very strong, their biggest advantage is loyalty, and they don't feel pain, so they should be even more powerful than the strongest special forces of the human race." Congratulations to the lord for getting two good helpers. ”

Lu Han also thinks it's good, it's so good that these two guys are 100% loyal, it's just the skeleton of aluminum alloy, isn't the defense too weak, at least it should be stainless steel, how resistant it is. Although aluminum alloy is light and elegant, should it be deformed?

Lu Han has no scientific concept of this, but he has the impression that aluminum products are relatively soft.

Specifically, you have to go out to check the advantages and disadvantages of aluminum alloy compared with stainless steel.

After another two days, Lu Han swiped enough 100 fantasy coins to develop and upgrade the [Black Water Knife Method] for Fighting Robot No. 1, and spent 4 no fantasy coins to buy the Sibaye Tang Knife.

Equip the two robots.

On weekdays, the two knives are carried behind their backs, and when they fight, they will be drawn out and held in their hands.

Lu Han bought well-fitting black stretch jeans, as well as black hooded sweatshirts, masks, and shoes for the two robots from the real world.

After wearing it like this, except for the red infrared light that could be seen in the eyes, the rest of the place were two young men with a height of 170 cm.