Chen Yue's heart was extremely excited.

Since discovering signs of mineral depletion, Chen Yue has had to take the initiative to slow down the construction of the project to save resources. It made him feel as if he was in chains, and it was very unpleasant.

Now, the discovery of the new ore vein has made the block in his heart disappear in an instant.

"I knew that there was no way to heaven and no one!"

Chen Yue's gaze immediately looked at his space launch center.

There, the newly developed "Mu-7" interstellar transport ship is ready to go.

The Mu-7 spacecraft was developed by Chen Yue on the basis of the Mu-5 rocket. It's larger, has more thrust, and has a correspondingly much higher transport capacity.

It is also an air-space dual-purpose type, which can take off and land directly on the surface of the planet, and can also fly in space. It's just that it looks like it is now, and it is a little inappropriate to continue to call it a rocket, Chen Yue simply called it a spaceship.

"So, Star Expeditionary Force, let's go!"

Chen Yue immediately gave the order.

A large number of mine robots that had been prepared before lined up in a neat line, like a majestic army, set off from the robot warehouse and entered one after another Wooden Seven type spaceships.

There is a steady stream of robots, including many excavators, mine trucks, crushers, generators, building materials, etc., and many materials and robots converge like an ocean.

"It's a pity there's no music."

Chen Yue thought secretly.

Such a large "army" is now about to set sail on an expedition. If it can be accompanied by majestic military music, the scene should be very beautiful.

A wooden seven-type spaceship was full of robots—there were about three hundred of them, and with Chen Yue's order, a powerful flame immediately erupted from under the spaceship, pushing it to rise slowly, and immediately flew in a certain direction.

More than 200,000 kilometers away is the planet where Chen Yue discovered bauxite, where Europa is located.

The Mu-7 spacecraft accelerated for a while, and then entered the inertial navigation stage. In the complex gravitational environment of the Jupiter system, it accurately advanced towards Europa according to the orbit calculated by Chen Yue in advance.

Behind it, hundreds of kilometers away, was a second Wood Seven spaceship. After that, there was the third, and then the fourth......

There are 100 ships, loaded with tens of thousands of robots, and all kinds of equipment.

This route has truly become an interstellar highway at this moment.

After a week of flying, the first spacecraft finally reached Europa.

Europa is a planet smaller than Callisto. It has only about one-fifth the mass of Ganymede, an escape velocity as low as 40 meters per second, and a surface gravitational acceleration of only 2 millimeters per square second.

The Wood 7 spacecraft can take off and land directly on Europa, and there is no problem in taking off and landing on it. So the spaceship controlled its attitude and landed on it directly under Chen Yue's control.

The hatch of the spaceship opened, and more than 300 robots rushed out.

Chen Yue was greeted by an even more desolate world.

It is a small planet with an irregular ellipsoidal shape as a whole. It also has a mostly dark red surface, with a large number of impact craters, more than on Callisto.

"This is the first planet I landed on other than Ganymede."

Chen Yue felt some emotion in his heart.

"From now on, this is my second industrial base. You, Europa, will also become the second industrial star of human civilization. ”

A robot planted a red flag on the dark red, desolate and silent surface of Europa, declaring Chen Yue's sovereignty over the place.

The Driver 7 took off again and began to return to Callisto. Three hundred robots spread their legs and marched majestically towards the No. 11 bauxite.

From this point on, Chen Yue decided to add a "0" to the prefix of all mines on Ganymede and "1" to the mine prefix on Ganymede.

11 indicates that it was the first mine on Europa.

Shortly after the first batch of robots left, the No. 2 Mu-7 spacecraft landed, releasing more than 300 robots. Then there are all kinds of machines, vehicles and tools.

Others landed in the rest. There has been a proven presence of glacitoline and solid oxygen. Chen Yue plans to build a power station here.

It was clear that Europa had to have its own power generation capacity. It's too far away from Callistto to get power from Callisto.

Of course, the supporting facilities of the mine should be built near the bauxite. Therefore, high-voltage transmission lines need to be built between the two.

A total of tens of thousands of robots, with the help of various tools, began a new construction activity.

While tools and manpower from Europa are arriving, Calmede is changing rapidly.

The power plant and mine grew as fast as bamboo after the rain, and it was officially put into operation in just half a year.

Gallium is a rare metal, although it is important, but Chen Yue's amount is actually not much, a hundred tons a year is enough, that is, the amount of one trip of the Mu-7 spacecraft.

But here is bauxite. Generally speaking, gallium is extracted from aluminium mining. Here it's the other way around.

Chen Yue mined gallium ore and refined aluminum along the way.

There is no shortage of aluminum elements on Callismo, but it is not very rich. It just so happened that the aluminum ore here on Europa was also transported there.

"Finally, there is no shortage of gallium."

Chen Yue sighed with emotion, re-mentioned several plans that had been suspended before, and started construction work again.

There was more contact between the two planets. The Wood VII spacecraft shuttled back and forth, bringing in large quantities of minerals from Europa and a large number of robots and mechanical equipment from Callisto.

Yes, a power plant and a mine can't satisfy Chen Yue's appetite.

Since it has already started on Europa, of course it must be all developed. You know, not only gallium ore, but also some other rare elements, or elements such as copper and tin, are not rich on Europa.

"If you want to play, play big."

Chen Yue made up his mind: "We have to make the name of the second industrial star deserved." ”

As a result, more interstellar expeditionary forces arrived on Europa with the Wood VII spacecraft, and more construction materials and equipment were transported here. The originally desolate and dead Ganymede, under Chen Yue's interstellar expedition plan, finally had a bit of a lively scene.

But at this time, there was a problem that could be tolerated for the time being, but with the expansion of the scale of the development of Europa, more and more problems that could not be ignored were presented in front of Chen Yue.

Communication delays.