A miracle at the beginning

As for deepening the lake, it is impossible to do so.

Luo Yu learned from the big octopus that there is also an air wall at the bottom of the lake, which makes it impossible to dive to the deepest point.

Although there are three options, there is only one way in front of Luo Yu: building a dam.

Building a dam actually has another advantage. Simply surrounding the lake can effectively reduce soil erosion and will not reduce the overall fertility of the territory.

No problem, build it.

Click on the building page, or the wall interface. Luo Yu plans to build a 20 cm high mini wall.

This is to block water, not people. 20 cm is enough. If it is not enough, just stack it up.

When choosing materials, he used stone bricks and iron ore together to reinforce the mini dam and prevent it from being washed away by waves.

Click to build, and the mini wall began to spread along the shore of the lake. In just a moment, it surrounded the lake.

Although the cost of mini walls is very low, there are many of them! This time, 30,000 bricks were consumed for 10,000 iron ore.

The consumption of bricks is really fast.

Fortunately, the small water discharge dam has been completed, so there is no need to worry about the water level overflowing for the time being.

I looked at the base score. The mini dam plus the previous beautiful water tower increased the score by 1,000 points. Now the overall score has reached 21,500.

"Do you want to build defense facilities?"

Luo Yu's eyes instinctively looked to the south of the territory.

In the wind and rain, simple fortresses stood firm, and automatic crossbows lay quietly on the top of the stone pillars, ready to fire at any time.

"Huh? The area of ​​the territory has expanded before, and the edge of the territory has exceeded the coverage of the crossbow."

Luo Yu frowned slightly. The area of ​​the territory will continue to expand. In order to consolidate the defense in the south, the crossbows need to be continuously extended. The cost of crossbows is still a little expensive.

He always felt that this was not a solution. This way of building bunkers was a bit stupid.

"Master, it's time to eat."

Xiao Jin walked to the balcony to remind Luo Yu that breakfast was eggs, milk and tomatoes, which did not need to be cooked, so Xiao Jin was now preparing breakfast.

Luo Yu collected his thoughts, gently touched her head, and went to wash and eat.

In the morning, the rain did not show any signs of decreasing, but Luo Yu received another reminder: [Your powerful heat absorption platform is not working]

He hurried to the roof and saw that the stone bowl was full of water. It was a miracle that it could work.

Luo Yu laughed and placed the stone bowl at an angle of 60°. Most of the water inside flowed out, which did not affect the heat supply.

Looked at the power, heat output: 1000

The power of the heat collection board next to it was only 100. The heat function was much less effective on rainy days, which would stop some of the fire water pumps from working.

This reminded Luo Yu.

The amount of water needed for the territory every day is calculated. Now that the wind is strong, there may be no problem, but when there is no wind and the weather is relatively cold, the territory may be out of water again.

This thermal energy absorption device is like this. When the weather is hot, the power exceeds the standard, and when the weather is cold, there is no output.

When the weather cools down, the problem arises again, and we have to find a way to solve it.

Click on the thermal energy technology, and after searching for a while, Luo Yu's eyes lit up and found a solution.

[Thermal energy storage box: thermal energy storage box design * 1, copper ore * 10000, gold * 5000, silver * 100000]

This thing is slightly cheaper than the lightning collection box, but it is also very expensive.

But there is no way, the thermal energy storage box is a necessary equipment for an automated base, and it is also one of the prerequisites for unlocking thermal energy weapons.

After looking at the mineral resources in the territory, there are 20,000 copper mines and 7,000 gold mines. I have to say that the Golden Scorpion King is still awesome. He finds a gold brick every once in a while, and Luo Yu digs there sporadically, so he has so much gold without realizing it.

Now he only needs a design drawing. Luo Yu searched on the auction house, but didn't find it.

He tried to shout in the world.

Human race (anonymous): "Collect the design drawings of the thermal energy storage box, and the price is right."

Originally, I shouted with the mentality of giving it a try, and someone really sent a trading box.

Black Water Tribe (anonymous): "You collect the design drawings, right? I have one, what do you plan to exchange it for?"

Then, he put the design drawing on the trading interface, and it was genuine and priced well.

Luo Yu showed a hint of joy in his eyes: "Of course I exchanged it for silver. How much is it? You name the price."

Black Water Tribe: "I don't want silver, I want vegetarian food."

"3000 vegetarian food, I will trade the design to you, buddy, no matter how you look at it, you have made a profit."

"Profit?"

Luo Yu replied with a sneer: "The price of vegetarian food will skyrocket soon. No, it has already skyrocketed. 3000 vegetarian food can only be sold for 300,000 silver. Do you think I am a sucker?"

"Besides, at this juncture, how many people do you think can come up with such vegetarian food?"

Black Water Tribe: "This... you have a point. Then how do you say the deal!"

Luo Yu: "Well, I happen to have some inventory here. I will give you 1500 vegetarian food, which is all my belongings, and then I will give you 50,000 silver. This is the only amount I can give."

Black Water Tribe: "Do you really have 1500 vegetarian food?"

Luo Yu didn't waste any words and directly put 1500 vegetarian food on it: "How about it, buddy, each variety has complete vitamins, and the Tiandao world has opened up secondary trading of food. You should know what price this batch of vegetarian food can be sold for?"

"If it can be processed again... You are a smart person, you should understand."

The Black Water Tribe was silent for a while, but still replied: "Okay! Since you have such a complete variety, I will trade with you!"

"But I want to remind you that you traded all the vegetarian food to me, so take care of yourself!"

[The transaction was successful, you got the design of the thermal energy storage box]

Got it!

Luo Yu smiled, this time the collection of the map was still very smooth, he was going to build a storage box.

And once the design is used, there is no need to collect the design to make similar items in the future, this deal is still very profitable.

Click OK, the light flashed in front of the eyes, and a square red box as tall as a person appeared.

[Thermal energy storage box: stores 50,000 units of thermal energy, and escapes 1% of thermal energy every day. Placing it in a closed space can greatly reduce thermal energy escape]

Just like a battery, if you leave it for a long time, there will be current loss. The same principle applies to this box, but the escape rate is not very high, and there are ways to alleviate it.