A smile appeared on Li Zhengsong's face, and his gaze at Hai Ge quickly became kind.

Haige was very embarrassed, scratched his head and said, "I'm ...... Even if it is. I've admired you for a long time, but I didn't expect to meet for the first time, so I recklessly offended you, and almost accidentally injured you, it's really damn ......"

Li Zhengsong raised his gray eyebrows and said abruptly: "It's okay, you didn't hurt me, if it were me, I had to take precautions when I heard that there was movement here, after all, there was something hidden in the dark, and no one knew the bottom of their hearts." ”

The old man was magnanimous and said that he was not injured, and Hai Ge's hanging heart fell back and nodded with a red face. At this time, he finally had the joy of being able to talk face-to-face with this respected old professor, and he said: "Professor Li, it's okay for you to be fine, it's just that it's so late......"

Li Zhengsong looked preoccupied, and when he saw that he wanted to speak, he said slowly: "Actually, I didn't just come to this workshop now, but I have been sitting here all night." After Wedel left, my heart was empty, and I felt that only by staying here could I feel a little more grounded. ”

"Huh? Have you never left? Hai Ge was stunned. How uncomfortable it is to sit from day to night in such a place, what is the sadness of the old man?

But this is also exactly what he wants—Professor Li must know where Wedel is going, and he also wants to know how the super metal was successfully smelted. These questions can probably be answered from the elderly, right?

As expected, Li Zhengsong really said with emotion: "Yes, there is only one leaf left on the branch of the purple apricot tree." But when the grove is back in full bloom, I wonder if we will ever see their owner again. ”

Haige seized the opportunity to ask, "Can you tell me where Mr. Wedel has gone?" Why did he go in such a hurry? And super metal, how did he develop it? ”

Li Zhengsong looked at him through the thick spectacle lenses, his eyes were meaningful, "Wedel's whereabouts were not revealed to anyone before leaving, so I can't answer your question." ”

"Ah......?" When Hai Ge heard this, he was immediately depressed like a deflated ball.

But Li Zhengsong changed his words and said: "However, I can tell you what happened in the underground plant kingdom that caused us to speed up the development of plant metals and start preparing for the major mission of going into space to build a triangular orbit. ”

When he said this, the old man seemed to be struggling, as if he was making a lot of determination. Hai Ge looked at it blankly, thinking that the big thing, could it be that it was also related to the professor?

"What are you talking about? Is it serious? He asked in a panic.

Li Zhengsong first asked him: "Did Wedel explain to you how he drilled through the passage from the ground to the core of the earth and sent us down?" ”

"This ......" recalled that during the time he spent with Wedel, he really hadn't explained this aspect, so Haige guessed, "Is it to use the light-controlled corridor?" ”

Li Zhengsong did not deny his speculation, but he was not completely sure: "Because of the limited length, the light-controlled corridor can only be used locally, so it is only one of the means." In fact, even without the 6,000 degrees Celsius temperature in the outer layer of the earth's core, other sections of the road are difficult and difficult to navigate, and it is impossible to complete the journey by relying on the light-controlled corridor alone. To keep us safe, Wedel uses a number of assistance methods, the most important of which is a ground-based spacecraft. ”

Sending people away with a spaceship, Haige had already guessed, and he was curious about what kind of magical spaceship Wedel had created, which could penetrate a thickness of 4,700 kilometers above the underground plant kingdom and withstand the test of blazing metal molt. It is conceivable that the technology required to build that kind of spaceship is far higher than that of a spaceship that sails in space, otherwise it would not have been until now, and the earth-based spacecraft would still be only the dream of earthlings.

He said: "Mr. Wedel once took me on a Doji spacecraft, which can isolate the strong radiation from Lying Elephant Mountain, is it a terrestrial spacecraft that can resist high temperatures?" ”

Li Zhengsong found a small stool to sit down, turned on the light in the workshop, and the room lit up. Seeing the half-meter-high anvil and a slipped iron hammer, Haige stayed neatly in place, as if he had never touched anyone since he had left the last time, and the only thing missing was the heat coming out of the furnace when the iron was smelted, so it seemed a little cold here.

Li Zhengsong told Hai Ge that the Doji Aircraft is only suitable for short-distance voyages and cannot afford long-distance flights from the center of the earth to the ground. Besides, there are only two people in that spacecraft, so it undoubtedly can't be a ground-based spacecraft.

Weedel used the Universal Drill brought from the U-star to drill a small-scale underground transportation network from the surface to the center of the earth. The network starts in the desert of Australia and ends in an old garage on the outskirts of Nishijin.

The entrance to the passageway, which is equivalent to the size of the old garage on the ground, can accommodate a small ground spacecraft with a capacity of 12 tons and a capacity of 50 passengers.

As for the heat-resistant materials used in the spacecraft, some of them came from Variable-One, and the others were made from the plant metal smelting workshop guarded by the Lahari tribe in Australia.

Wedell built a total of three of these ships, disassembled them into modules, transported them underground, assembled them in old garages, and finally picked them up through the underground network.

How long did it take for more than 4,000 people to enter the underground plant kingdom on an earth-based spacecraft with a capacity of only 50 passengers? The movement must not be small. During this period, it did not arouse anyone's suspicion? This is Haige's question.

Mr. Lee said that Mr. Wedel was very good at stealth operations, and that he always had a way to evade all human tracks on the ground, even if he slipped under the noses of the enemy. The identity of the wandering artist has given him great convenience, from the first day of launching the Earth Rescue Project to the present, the only thing he has not prevented is only one thing.

The old man was silent when he introduced this, as if he was deliberately selling Guanzi.

Haige is in a hurry, how can you wait for a long time? I couldn't help but ask, "What is it?" It's not better than U-star technology, right? ”

Li Zhengsong took a deep breath and said two words: people's hearts.

"This ......" Haige was startled, and immediately understood.

Next, the old man told the secret that he had hidden with Wedel and that he never wanted to mention, it was indeed a major event that affected the entire Redeeming Light Organization, and after listening to it, Hai Ge also understood that the old man did not deliberately want to sell Guanzi, but that there was indeed something unspeakable.

In fact, as early as 50 years ago, when the Global Science and Technology Federation was first established, the scientific community had a plan to explore the center of the earth, but it has been difficult to implement because of the inability to build a ground-based spacecraft that can withstand temperatures of 6,000 degrees Celsius.