Here at Sanjiangyuan Academy, when the afternoon competition was in full swing, Yan Xu received a new job in the maintenance center of Sanjiang First Military Academy. The huge source stone under the Black Tower of Bee Island before, because of the almost explosion of source energy, the shell of the source stone was disassembled.

After the crisis was resolved, the government originally planned to seal the source stone, but after the appraisal of a number of senior source masters, it was confirmed that the source stone was safe, and the source energy stock in it was still very rich and active. So after several rounds of meetings, the government decided to reactivate the source stone, but the shell that was disassembled at that time could no longer be assembled back in its original state, and the shell was also very old, and it should have been eliminated a long time ago.

Therefore, the task of designing a new shell for the source stone of the Black Tower fell to Yan Xu.

Since the shell of the source stone is to be designed, the engineer must first understand all aspects of the source stone, and the preliminary work of collecting information is naturally responsible for the assistant.

Although Andrew likes gossip and loves to chase stars, he has never been lazy and procrastinating on his work. After paying attention to Lin Yi's game for a while in his free time in the afternoon, he suddenly received the task assigned by Yan Xu in the middle, and he immediately retracted and resumed his work.

And this check allowed him to find out a lot of interesting things.

It turns out that the huge source stone under the Black Tower of Bee Island is said to have come from a meteorite millions of years ago. And at that time, there was more than one meteorite that fell from space, and the one under the Black Tower was not the largest.

It is rumored that the central lake of Sanjiangyuan College is a huge crater smashed out by the meteorite rain. More than 300 years ago, geologists reported that the central lake was originally about 1,000 meters deep. It was only after millions of years that the earth's crust underwent two major movements, the pit was backfilled by more than 600 meters, and the area of the lake was reduced by almost half, and finally the central lake was formed.

Three hundred and thirty years ago, there was a rumor in the source master and geological circles that the meteorite that fell from space should still be buried under the central lake, and it is likely to be a high-grade source stone. Because at that time, many source stones found by the source masters from all over the world, which were later identified, were all from outside the sky, and the time when they arrived was about the same as the time when the central lake was formed.

Therefore, not long after the rumor came out, Sanjiangyuan College launched a project - to find the source stone at the bottom of the lake.

At that time, the technology was not as advanced as it is now, and the project was carried out for three years, and it was true that a few good source stones were found, but in the process, the biological chain in the central lake was almost devastatingly destroyed. The value of the source stones found is far less than the loss of the biological environment in the lake.

So in the fourth year, the project was stopped, and Sanjiangyuan University also made more than a dozen new school regulations on the protection of the central lake, several of which were later included in the constitution of the Sanjiang region.

After Yan Xu finished the work in hand, he asked here, and Andrew hurriedly gave him a rough report on the information he had found, and then added his guess: "Teacher, it seems that I estimate that there should be a lot of source stones at the bottom of the lake." However, this is already the news hundreds of years ago, when the school rules that protected the central lake were included in the constitution, and no one dared to fight the idea of the central lake, and now hundreds of years have passed, and it is estimated that no one knows about it anymore. ”

Time has become the best protective screen.

Yan Xu didn't answer Andrew's words, after listening to the report, he pondered for a moment, and suddenly asked, "Is the afternoon freshman competition of Sanjiangyuan Academy over?" ”

Andrew sighed, and then said: "Not yet, the afternoon game is two rounds, the fifth and sixth, and Lin Shuai has just finished the fifth round." As he spoke, he cut over the net and glanced at it, then said, "Oh, Lin Shuai is just starting the sixth round now. ”

Yan Xu said: "Let's go and find the details of the project three hundred and thirty years ago?" ”

Andrew asked, "You mean the project that found the source stone at the bottom of the lake?" ”

Yan Xu nodded, and Andrew said, "I'll try my best to find it, but after such a long time, it is estimated that it will be difficult to find detailed information." ”

The teacher sometimes made strange requests, which he was used to, so Andrew didn't ask too much and went to work.

It's just that when Andrew turned around to get busy, Yan Xu turned on the live broadcast of the game at Sanjiangyuan Academy.

……

In Audrey's castle, Madame Rose leaned back on the sofa and said slowly: "Although everyone does not dare to act rashly, there may be one or two madmen, after all, such a rare opportunity." I always feel that if that girl deliberately makes a risky move and deliberately makes such a big show, in the end, she is likely to be smart and mistaken by cleverness. ”

Louie smiled, "If that's the case, it will save me a lot of trouble." ”

He didn't want to have any unhappiness with Sanjiangyuan School now, so he was very reluctant to rob the students in the Yuan Academy, if someone could do it for him, then he couldn't ask for it.

The praying mantis catches the cicada and the yellow finch is behind, and as long as someone makes a praying mantis, he will be the yellow finch.

It's just, in front of everyone's eyes, is there really such a madman?!

……

When the diving egg was about fifty meters away from the great white turtle, it finally caught its attention, and it was originally staring at the source stones piled up in the small whirlpool, but suddenly turned its head and looked at the diving egg.

Lin Yi put on the diving goggles: "I'll go out, you guys stay inside, brighten up the light source of the diving egg, don't move." ”

Lan Ri said nervously: "Captain, will it be dangerous for you to go out?!" ”

Lin Yi: "It's a vegetarian, it's just a little more curious, as long as it doesn't provoke it, it's fine." ”

After Lin Yi finished speaking, she bounced out, and this time, she also hung the chain source pattern lock table on her waist. At this moment, the big white turtle swam over and gently pushed their diving eggs with his head, and Lin Yi took the opportunity to "swim" past it. Because of the great white turtle's love for the new and dislike of the old, the small whirlpool over there has disappeared, and dozens of source stones are stacked in a small pile at the bottom of the lake.

Blue Sun and Blue Moon sat in fear in the diving egg, watching the big white turtle swim around them constantly, occasionally pushing the eggshell with their head, or pulling the diving egg with their paws to play around. Luckily, it didn't use much force, otherwise they would have to be prepared to flee for their lives.

After about ten minutes, Lan Yue noticed that Lin Yi had taken the Source Pattern Lock Table off his waist and rested it on the Source Stone Pile, then took out the Source Carving Pen.

Lan Yue was surprised, but at this time, she didn't dare to disturb Lin Yi, and only asked Lan Ri quietly: "Has the captain found a suitable source stone?" At this point, you are determining the source? But it's so dark, can the captain see it clearly? ”

Lan Ri shook his head: "I don't know, it should be." ”

After a while, Lin Yi collected the origin pattern lock table, looked at them, and then didn't move for a long time.

Lan Yue suddenly became a little nervous: "What's wrong with the captain?" ”

Lan Ri was about to open his mouth, but at this moment, Lin Yiyou came back.

Lan Ri breathed a sigh of relief before opening the communication: "Captain, have you found a suitable source stone?" ”

Lin Yi: "No. ”

Lan Ri was a little disappointed: "Are you coming back now?" I'm going to change the position of the pod to avoid the big white turtle so that you can get in. ”

Lin Yi: "No, don't move. ”

The big white turtle was already lying next to the diving egg at this time, as if it was a little tired of playing, or maybe it was tired, so it stuck its head out, pressed it against the eggshell, closed its eyes, and remained motionless.

Lin Yi approached little by little, and it was not until he was about two meters away from it that the big white turtle opened his eyes, moved his head slightly, and looked at Lin Yi.