Beside her, Xiaodie and Xiaokong were awake and were wearing clothes. Xiao Jin ran out to set up a burning pit every three hours last night. She is still sleeping, so she won’t disturb her!

After breakfast in the morning, Luo Yu looked at the thermal energy storage box and came to the level of 18000/5000 in the evening. It was not bad, and it would be full in a few days.

Early in the morning, Luo Yu cut all the stones dug out from the ground worms and ground badger beasts last night. Add the inventory of the whole day yesterday. Now there are 100,000 stone bricks, so you can consider starting your plan!

Strike formation!

Yes, the previous battle with the Fire Double Star gave Luo Yu inspiration. He wanted to build a strike array and completely eliminate the invading enemy in the east at the entrance!

The design of the strike array is complicated, but Luo Yu already has a detailed blueprint in his mind.

He walked to the edge of the territory to the east, and looked at the fog in front of him and the looming air wall, Luo Yu determined his direction.

Every time you attack, it’s this location that comes in!

All attack units or neutral units entered from the area in front of them, and Luo Yu basically calculated that the intersection hidden in the fog should be about five meters wide.

The strike array is to start building from here.

First, Luo Yu wanted to build a corridor so that the attacking unit must enter the strike array along the corridor he built.

As for the walls on both sides of this corridor, Luo Yu chose to build the walls of the mechanism.

This is a high-level wall that appeared after unlocking the city wall technology. Their hardness depends on the material. The reason why it is called a mechanism wall is that it can hide terrible things such as automatic traps in the wall.

Just like tight fire-proof floor tiles can be buried underground, the mechanism wall can be used!

This is the wall that Luo Yu fell in love with at first sight.

【Machine wall (per section): stone 200, iron ore 20, silver 20, gold *2】

Each section of the mechanism wall is 5 meters high, 1 meter long and half a meter wide, so it is very expensive and even gold is used.

Luo Yu started to build the first section of the wall close to the air wall. The distance between the two mechanism walls was 6 meters and began to extend.

The spacing is 6 meters close to the air wall, which ensures that all units entering will be in the wall as soon as possible.

The two walls did not extend much, and then immediately turned at a right angle and began to extend to the left.

The reason why he suddenly turned around instead of going straight to the position was because Luo Yu wanted to let the opponent stay in the corridor for as long as possible so that the mechanisms on both sides could kill more enemies.

At the same time, turning can make more reasonable use of space. There is only one principle. The longer the enemy stays in their own strike array, the higher their death rate will be.

The corridor extended 60 meters to the left, and suddenly another corner extended to the right. This time, it extended 120 meters to the right.

If the entrance is the center point, then turn left and then turn right for 120 meters to balance left and right. In this way, the total length of the strike array is 126 meters, which is also better.

Why is the number 126?

Because Luo Yu will build arrow towers and automatic crossbows on both sides of the corridor, and build them on both sides of the left and right. The number 120 meters is the coverage of arrow towers and automatic crossbows. When the enemy enters the corridor, no matter which end, he will be attacked by arrow rain from both sides, which is difficult to defend against.

A corridor extending straight to the entrance, then turn left 60 meters and then to the right 120 meters, and the strike array corridor in the first section will be laid out.

Total costs: stone bricks 25200, iron ore, silver 2520, gold 126.

Other things are fine, but the consumption of stone bricks is really huge.

Luo Yu planned to build three sections of such a snake-shaped corridor. With the first section, the next two sections will be very easy and will be completed soon.

The total cost of stone bricks is 76,000, iron ore, silver is 7600, and gold is 380.

The first ring of the strike array that Luo Yu expected was completed.

The second ring is naturally to prevent attacking people or other units from climbing over the wall from above.

Luo Yu spent the iron ore to buy a large number of iron spikes and installed them on the top of the mechanism wall.

These iron spikes are densely packed and there is no room for hand or footsteps. If you really have the courage to go over and take a look, you will definitely be disabled.

Only those who can fly, or who can jump five or six meters high, can jump out.

If there is really such a method, it is Luo Yu who can do it himself.

Building the iron spike consumed a lot of Luoyu's iron ore, but a lot of iron ore has been stored these days, which is still enough.

The third step is the arrow tower.

There must be an arrow tower at each corner, with a total of 6 corners, which means 6 are needed.

【Automatic attack arrow tower (3000 pieces): wood * 30000, iron ore * 5000, silver * 2500】

Building six arrow towers requires 180,000 wood and 30,000 iron ore. There is indeed still iron ore inventory, but Luo Yu is unwilling to use up all the inventory. Anyway, the price of iron ore on the market is not fluctuating at all, so you can buy them all.

The wood of 18w is currently priced at 1:2.5, which is 45w.

30,000 iron ore, 60,000 silver can be purchased, plus the 15,000 silver consumed by the six arrow towers, the total is only 52.5000 silver.

Currently, the base has 252.6000 yuan in silver, which costs a fraction of the money.

You can really do whatever you want if you have money.

Click to buy at the auction house. Before the burst of buying, all kinds of materials were piled up in front of him. Luo Yu directly clicked to build it. In just a moment, six arrow towers stood outside the wall.

The range of the six arrow towers almost covered the entire corridor, but Luo Yu knew that this was not a killer weapon.

After all, the enemy enters the corridor, and there are walls on both sides of the corridor. It would be good if the Rain of Arrow can have half the hit rate.

Luo Yu’s real killer is to build a fire-intensive strike array at the exit of the corridor!

It is also the true core of this formation!

This requires the use of the 38 automatic crossbow arrows built before.

Previously, Luo Yu spent a lot of money to build 38 automatic crossbows in order to defend the south, and traded 4 with people, with 34 left, all of which could be placed on the fire formation.

Put it on both sides and an enemy emerges from the corridor will be welcomed by 34 crossbow arrows, and they may be shot into sieves on the spot.

The corridor is so wide that there can't be too many people coming out at once, which means one person will die.

However, it is also necessary to arrange it in detail.

Luo Yu started to build a wall again. This time it was not a mechanism wall, but a much cheaper high-end wall.
Chapter completed!