At noon the next day, Lin Chen, who was still in the library, finally received a prompt from the system.

"Ding, the research and development of [primary civil ship technology] has been completed."

"Open the Research Center."

Then, the familiar system interface appeared in front of Lin Chen's eyes again.

(For the convenience of calculation and reading, this book is 1 knot at sea = 2 km per hour)

(Research Center)

[Small deep-sea mining submarine]: A small submarine that can dive into a depth of 100 meters for mining and employment. Speed: 15 knots. Operational efficiency. 5 tons/day. Cost: 200 energy points. Duration: 2 hours. Requirements: primary systems, primary civil ship technology.

[Small Transport]: A cost-effective small transport, with low cost and large cargo compartment as its characteristics, but with weakened armor. Maximum load: 500t. Cost: 1500 energy points. Duration: 15 hours. Requirements: primary systems, primary civil ship technology.

"Let's build ten small mining submarines and one small transport ship. Then develop energy refining technology. Lin Chen thought for a while and said.

"Ding, deduct 2000 energy points. [Small Deep-Sea Mining Submarine] has been added to the build queue, quantity: 10. Duration: 20 hours. ”

"Ding, deduct 1500 energy points. Small Transports have been queued for construction, quantity: 1. Duration: 15 hours. ”

"Ding, deduct 250 energy points. [Primary Energy Refining Technology] has been added to the R&D queue. ”

After doing all this, Lin Chen continued to read the novel, looked at the progress of the construction, and estimated the time from here to the beach, so he was not in the mood to continue to soak in the library, and after packing up his books, he walked towards the beach.

Senhai is a coastal city, and the distance from the library to the sea is not far, only about 20 minutes to go.

"Ding, small deep-sea mining submarines have been built. Please select a place to place it. ”

The system's prompt sounded at this moment, and then a world map appeared in front of Lin Chen. The map clearly identifies every corner of the world, even unexplored mineral veins and hidden military bases.

Seeing this map, Lin Chen's eyes also lit up, such a detailed map is unique in the entire earth, even if it is only a part of the content of the map, I am afraid it will cause an uproar in the outside world!

After all, every mineral deposit is a huge wealth, especially those rare metals, plus the deployment of military bases, this is a strategic map!

Taking a deep breath, Lin Chen placed the first submarine in the sea area in front of him.

The reason why it was placed here was just that Lin Chen was a little curious about how the submarine appeared, and judging from the universal tools that appeared out of thin air before, it was very likely that it also appeared out of thin air this time.

Sure enough, a small submarine suddenly appeared in the sea, causing countless bubbles to bubble up on the surface of the sea, causing ripples.

Seeing the phantom of the submarine under the sea not far away, Lin Chen smiled slightly, turned around and went back.

As for the submarine, it will quickly go to the open sea under the control of the adjutant, but this is the territory of China, and it will be difficult to do it if it is discovered.

The units produced next will all be placed in relatively remote places on the high seas, and these little things will be operated by the adjutant, so Lin Chen doesn't need to worry about it himself.

In the blink of an eye, a week has passed. In the past few days, Lin Chen has gone to Uncle Qin's place of work to help. It was an auto parts factory, and Uncle Qin's job was to carry the goods to the trucks, which was the so-called porter. Lin Chen can also be regarded as having experienced the hard work of working people. Think about the previous life, the family was quite wealthy, where would I have the opportunity to experience this life?

"Commander, I have found a buyer in Senhai City according to your request, it is the Senhai City Ore Refinery." The adjutant's voice rang out from the headset.

"Senhai ore refinery? It's close. Lin Chen touched his chin and said. At the beginning, his request was to be closer, the closer the better, it didn't matter if the price was low, because Lin Chen's ore was almost useless, no matter how he sold it, he made money. "Have we got all the documents for the transport ship?"

"Yes, and customs have been notified, and it will be able to enter the country soon." The adjutant said. "But before that, the commander has to go on a transport ship. Unmanned ships can cause unwanted effects. ”

"I see." Lin Chen nodded, it is necessary to be inspected after passing through customs, and it will be embarrassing if the inspectors find that there is no one in this transport ship.

After a while, Lin Chen came to the previous shore, and the sea water washed over the shore and made a "bang" sound, which made people have a magic power that could calm their anxiety.

A few minutes later, a sharp object suddenly cut through the sea, and the corners of Lin Chen's mouth rose slightly.

The submarine is coming.

After the sharp horn came to the surface of the sea at Lin Chen's feet, it floated up slightly, and then a round hatch opened.

After Lin Chen completely entered the hatch, the hatch cover slowly closed again, and then the entire submarine quietly disappeared into the sea.

The structure inside the mini-submarine is the first time Lin Chen has seen it, the head of the submarine is a semi-circular panoramic glass, plus the searchlight on the submarine, the surrounding scenery is unobstructed.

Speaking of which, it was the first time Lin Chen had seen the scenery under the sea with his own eyes. It was a kind of mysterious beauty, countless unnamed fish were attached to the glass, looking at Lin Chen inside with a curious target, and Lin Chen also looked at them curiously.

The time to enjoy the scenery under the sea passed quickly, and after a while, the adjutant reminded Lin Chen that it had arrived.

Leaving the submarine, little by little climbed up the ladder of the transport ship. Lin Chen finally saw the messy pile of ore.

There are hundreds of tons of ore in that mountain of ore, to say the least!

"It's three hundred and fifty tons in total, and the estimated value is not less than seven million, but the source of our ore is too suspicious, and it is very likely that they will lower the price." The adjutant said.

"I know, as long as you don't press too much, I'll accept it." When he said this, Lin Chen's heart was still trembling slightly, this is millions!

A sense of unreality reappeared, but it was all suppressed by Lin Chen. Because the sense of unreality will disturb his judgment, he must be calm at this time.

Soon after, the transport ship passed through customs without a forged document from the adjutant, and the customs only checked the cargo on board and let the ship pass after making sure that there were no violations.

It went even better than expected!

Although the adjutant is not very creative, the ability to invade is absolutely leveraged, and the ID cards in this world have been registered. After all, the one in his hand is a supercomputer, which is a supercomputer according to the standards of the universe, not the supercomputers of the earth.

"Adjutant, contact the Senhai City Ore Refinery and ask them to come to the beach to meet."

"Yes, Commander."