Calmede local time was already a little late, but it was just right when converted to earth time, a group of people poured into the restaurant, divided into meals, Ye Han greeted Luo Qi with his share, and sat down at a table with the mechanical expert dialect. (PS: Book friend Crimson String Moon friendship cameo - the word count is not counted here.) ）

Took a mouthful of rice and put it in his mouth, chewed it twice tastelessly, Ye Han raised his eyelids and glanced at Fang Yan, seeing that Fang Yan had no meaning to speak, he could only bow his head and continue to deal with the food on the plate.

Luo Qi took a bite of rice into his mouth, and stuffed two chopsticks with shredded meat and fried leeks, and the one he chewed was called fragrant.

Ye Han couldn't help but persuade: "Slow down, no one robbed you, it's not enough." ”

He really wanted to ask about the mission right away, but after thinking about it, he put up with it and waited until he was almost finished.

Luo Qi smiled, and couldn't speak at all.

When the base was first built, everyone's non-staple food was space food transported from Beiyue Continent, and it was okay to eat that thing once in a while, and everyone was tired of eating three meals a day.

However, there is a special planting cabin at the base, which refers to the experience of Beiyuezhou and uses multi-layer soilless cultivation methods to grow vegetables.

When the convoy set off, the vegetables in the planting cabin had just sprouted, but I didn't expect that in just ten days, the first batch of fast-growing vegetables had been served on the table, and it was not far from time to achieve full self-sufficiency in vegetables.

Fang Yan commented while eating: "This planting cabin really solves a big problem, and it is good to be able to eat fresh vegetables here!" ”

Luo Qi finally swallowed the contents of his mouth, and said with a smile: "I heard that Beiyuezhou has also developed a breeding cabin, why didn't you match it for us." ”

Fang Yan smiled: "That, raising chickens doesn't lay eggs, raising pigs doesn't lay cubs, and raising fish is still good, and other pure." ”

"Why?" Luo Qi asked curiously.

"It seems to be because of weightlessness...... Hey, we've got good gravity here, so don't you try. Speaking in dialect, he turned his hopeful gaze to Ye Han, "But that thing uses frozen embryos, and the breeding cycle is not short." ”

"You can try." Ye Han said, "We don't know how long we'll have to stay here." ”

Luo Qi's eyes widened: "The planting cabin uses vegetable seeds, and the breeding cabin uses frozen embryos, good guy, it's enough to save money." ”

Even today, when the cost of aerospace has been greatly reduced, aerospace is still a money-burning business, and Beiyuezhou must be doing this to reduce costs.

"Have you eaten yet?" Ye Han glanced at Luo Qi.

Luo Qi nodded: "Almost." ”

"That's good." Ye Han put down his chopsticks, "What the hell is going on?" ”

Although there are people coming and going in the cafeteria, the base is full of its own people, so you don't have to worry about leaking secrets.

Luo Qi didn't speak, and his first reaction was to look at the dialect.

Fang Yan rebuked dissatisfiedly: "Look at what I'm doing, you can say whatever you have to say." ”

"That's what you said!" Luo Qi pushed the responsibility cleanly, and then looked at Ye Han and said, "Boss, our Professor Fang said that if you want to study planetary engines, you must build a new base underground!" ”

Ye Han was confused: "What is this, let's talk about it from the beginning." ”

"Oh!" Luo Qi agreed, recalling what happened these days, picked up the chopsticks and clicked on the table, "This is our base, this is the entrance to the underground passage, after entering it is a slope passage, from here all the way down to the center of the earth, there is a fork in the road, I saw that there are aliens in the fork, and it should be a dungeon." ”

The dialect said: "I have carefully observed, the closer to the ground, the more aliens there are, and not a single alien can be seen in the fork near the center of the earth, and there are many forks that are simply dead ends, I don't know if the passage collapsed or was deliberately sealed." Speaking of this, Fang Yan paused, "From the ground to the center of the earth, there are dungeons everywhere, I don't know how many forks in the road there are, this is just a passage, I've been thinking about how many people can live in Ganymede full these days." ”

Ye Han said: "The political work team got some information from the aliens, and according to the intelligence, Europa has never been full. ”

"And this?" Fang Yan's eyes widened in surprise, "What about the others?" What else? ”

Ye Han nodded: "It's the same thing as a history book, I don't know if it's true yet." ”

"Then find a way to prove it, using carbon 14 measurement, or something else." Dialects hurried up with ideas.

Ye Han smiled bitterly: "It's just a few words, how to measure it?" ”

Fang Yan's eager expression froze for a moment, and he took a bite of food in disappointment.

Ye Han looked at Luo Qi: "What's the situation with the channel?" How much is it long and how much is it wide? ”

Luo Qi hurriedly replied: "It's basically a circle, very straight, with a diameter of no less than ten meters, and a very large slope, almost sixty degrees, and our car almost overturned when we drove in." ”

Ye Han frowned: "Then why don't you report it?" ”

The two engineering vehicles at the base are modified with armored vehicles, and they can climb a slope of 35 degrees at most, and the zero gravity of Europa is lower than that of the earth, and the climbing angle can be slightly increased, but the maximum can not exceed 42 degrees, otherwise the center of gravity of the engineering vehicle will cross the rear wheel support point, and the car will definitely roll over without negotiation.

Increasing the chassis to shift the center of gravity, or installing training wheels could improve gradeability, but the few options he could think of required technical and equipment support, which was simply not possible on Europa.

"It wasn't that steep at first, and I lost contact before I got to the steep place." Luo Qi explained.

"And how did you get down?" Ye Han was stunned.

Luo Qi grinned, and his two hands dragged one after the other: "The aliens sent two bugs to bite the tail of the car, and they kept going down." ”

"All the way to the center of the earth?" Ye Han asked in disbelief.

"No, I changed a few times in the middle, and the further down I went, the lower the gravitational force became, and I was almost weightless at the end, and I could drag the car with one hand." Luo Qi said.

Fang Yan added: "If it weren't for the low gravity, we wouldn't dare say that the planetary engine is at the center of the earth." ”

"Oh!" Ye Han suddenly said, "How many turns does that passage take?" ”

If the planetary engine is in the center of the earth, then the channel through the engine must be perpendicular to the horizontal plane, and since the inclination angle of that channel is 60 degrees, then the channel must not go straight to the center of the earth.

"Ten rounds, and a few dungeons in between." Luo Qi said.

Ye Han's brows furrowed even deeper: "Luo Qi, from your point of view, what can you use to fly straight to the center of the earth?" Solo aircraft? Gyroplane? Helicopter? Or a fighter! ”

Luo Qi thought for a while and said: "Fixed wing is definitely not good, gyroplane is also a bit difficult, armed helicopters should be fine, but they can only be lined up and fly one by one." ”

Fang Yan was stunned when he heard this, and couldn't help but ask, "Director Ye, what do you mean...... Sneak attack? ”