The three female section chiefs left, and Silvia and Anina also slept. The world without women is pure. Xia Lei carried a backpack to the villa inside the factory. The place was guarded by Wu Xiaoguo and his men, and no one lived in it since Sylvia and Anina moved out. At night, it looks like a haunted house without lights.

Two special forces guarding the front door saluted Xia Lei, who nodded in greeting and entered the villa unhindered.

Coming to the underground laboratory, Xia Lei opened his backpack and took out the contents. A notebook with only one content, that silver piece of metal, an old canvas that once had content but eventually disappeared into everything, these are the things he brought out of the labyrinth of Leonardo da Vinci in Bobbiodi, Italy. There were some other things, Leonardo da Vinci's manuscripts and paintings, but he didn't bring them here.

The lab was silent.

Xia Lei looked at three things and was distracted.

Ancient alloys, AE, Princess Yongmei, Leonardo da Vinci, silver metal, bronze treasure books, and compasses all came to his mind. There is an inevitable connection between these characters and things, but he can't find the thread that can connect these people and things.

After a moment of silence, Xia Lei picked up the notebook.

Open it, and the first page is still the same paragraph in Italian: when you read this content, it means that you are here. I've finally completed the mission she's given me. I can't help but imagine the moment and it excites me. I hope you can unlock the secret of the box, I am in heaven, waiting for your good news. Also, she gave me a piece of metal, which I tried, but couldn't figure out how it worked. Maybe you can. The way out is right in front of you. How did the Vikings get in?

He went to Bobbio, Italy, because of the paintings of tranquility and the paintings she said in her "enchanted" state. According to the message left by Leonardo da Vinci, his main mission to go to the underground labyrinth was to "wake up someone", and silver metal was secondary.

"The people of the Knights Hospitaller call this piece of silver metal 'God's metal', and also regard it as a sacred relic of the Knights Hospitaller, it can't have no story, and it can't be worthless, right? In the underground labyrinth, I tested its strength, and it is not ordinary metal. Leonardo da Vinci studied it, but left no research materials...... "Charley flipped the first page, then lifted the blank page behind the first page above his head, using the light above his head to shine on the paper with no content.

The paper was clean and there was not a trace of ink. In the light, he saw faint traces that Da Vinci had left when he wrote the first page.

But just as Xia Lei was about to turn it over, he suddenly remembered something, and he handed the second page to the light, and awakened the microvision ability of his left eye.

This time, he saw something different. Some of the traces of the pen and stroke are different from the text on the first page.

These different traces indicate that Leonardo da Vinci wrote something else after writing the first page, and if not, there would be no different writing marks on the second page.

Xia Lei followed suit and looked at the blank paper behind him in the same way, and as a result, he found more traces. Those marks were very faint, and under normal circumstances, he would not have been able to detect them without awakening the ability of microvision.

This discovery made Charley excited, and he was sure that Leonardo da Vinci had left the contents of the notebook.

He quickly prepared acid-base solutions of different concentrations, and then carefully dripped some onto the white paper in his notebook. Before he could try all the acid and alkali solutions he had prepared, the first drop worked. Places wet with acid-base solutions soon reveal the Italian language.

"Haha!" Xia Lei couldn't help but laugh, dancing in the laboratory like a child, "Da Vinci, Da Vinci, you are really the smartest person in the world, in that era you were able to make invisible ink." ”

Invisible ink is not a rare thing in modern times, and it can be bought at a stationery store for money. But in Leonardo da Vinci's time, it was absolutely magical.

More acid-base solutions dripped on the white paper, and a full Italian phrase appeared on the white paper: Am I the smartest man in the world? No, if I were the smartest man in the world, I would be able to unlock the secret of God's metal. It seems to me that it is as mysterious as she is and does not belong to this world. Thirty years ago, she came to me, and she made me special. Thirty years have passed, and my quest has yielded nothing. I'm old, and I'm not going to die soon, but she's still so young, and there's no sign of aging. I think she's an angel and it's part of the angelic sword. She is an angel who has fallen to the mortal world, and her angelic sword is also destroyed. She was looking for a trace of a god and fighting the devil, but it was destined to be a thorny and dangerous path......

Xia Lei continued to drip acid and alkali solutions on the white paper.

More of it was revealed: she always came back with her wounds, and each time she brought back a little bit of mineral powder and smeared it on the canvas. I asked her what those mineral powders were, and she never told me. I also asked her why she painted such a strange picture, and she said that if she died, one day someone would come here and wake her up. I can't understand such things, just as I can't understand God's world......

The second page is over.

Xia Lei was stunned but still stunned in front of his notebook, holding a dropper containing acid and alkali solutions, like a statue.

Leonardo da Vinci's writing in invisible ink solved some of the mysteries that puzzled him, but it also caused him quite a shock.

Twenty years ago, she came to me and she made me special.

This is Leonardo da Vinci's original words, there is nothing special about such a sentence, but in Xia Lei's eyes, it is not so simple. His ability comes from AE capsules, and if it weren't for the AE capsules left by his father, his life wouldn't be what it is now, and he might still be burning electric welding on the construction site, moving bricks, and living at the bottom of society like a dog. So, the turning point in his life was the AE capsule.

Leonardo da Vinci is known as the smartest man in the world, and he is not only the only all-rounder today. The turning point in his life was "her". So, could the turning point in his life be because "she" also gave him AE capsules?

Hundreds of years have passed, and Leonardo da Vinci is gone, and he obviously can't give an answer anymore. The only one who can give the answer is "her", but where is "she"?

Xia Lei turned the second page, and his eyes fell on the third page.

The acid-base solution that seeped down from the second page made the contents of the third page apparent early: she liked to sit in the scorching sun, doing nothing but looking at the sun. I tried, but I couldn't hold out for a minute, and she could sit like that all day until the sun went down. She said that it would make her stronger, and I didn't understand why, and I noticed that she never tanned, and her skin was always youthful and delicate. This inspired me to analyze God's metal in terms of light and heat, but in the end I found nothing......

The content of the third page suddenly reminded Xia Lei of Princess Yongmei. She was afraid of the cold, and during the treasure digging in Jerusalem, she even pestered him to take a hot bath with him.

A conjecture came to his mind, "Could it be that the one that Leonardo da Vinci spoke of is the same person as Princess Yongmei I met? Da Vinci met a complete her, and I met a mutilated her?"

When the acid-base solution was dropped on the fourth page, something new came to light: she never told me what she was fighting for, nor who her enemies were. She left the labyrinth again and again, and each time she came back with a wound. She never gave up, and I couldn't help her. The last time she came back was a night without a moon or stars, and this time she was so badly injured that she lost her body. I can't understand why she still exists, but God is like that. She told me she was going to die, and she asked me to do something for her. After she left, I closed the maze and did everything she told me to do. I can't predict the future, and I don't want you to see it, it's just an old man's words. And if you see it, and you wake her up, tell her that I love her. Leonardo di Piero Leonardo da Vinci.

There is no content on page 5.

Leonardo da Vinci had never been able to help her repair her "Angelic Sword" in his life, and he obviously would not have recorded those failed experiments in such a notebook.

The contents hidden in the notebook reappeared, but Xia Lei's heart still couldn't calm down.

Now, Charley was almost certain that the "she" that Leonardo da Vinci had encountered was the complete Princess Nagami, but da Vinci did not explain what "she" had him do before he died. And the one thing he wanted to figure out the most was whether any of the things "she" asked da Vinci to do were related to AE capsules!

Ancient alloys, ancient alloy boxes, bronze treasure books, compasses...... These unsolved questions popped up in Xia Lei's mind again, and he also had a deep sense of powerlessness.

Leonardo da Vinci and "she" clearly failed. Leonardo da Vinci never solved these mysteries throughout his life, and "she", who was as powerful as an angel, eventually died. Is everything he has experienced and done just a repetition of history, and is it doomed to failure?

Jingle bells, jingle bells......

Suddenly a cell phone rings in the silent underground laboratory.

This ringtone startled Xia Lei, he subconsciously took out his mobile phone, and when he looked at the screen, he froze, there was no number on it.

Xia Lei slid the answer button, "Who?"

"Whew...... Suck ......"

Charley's heart pounded, it was her! The woman who called him to run away in Paris!

"Who are you?"

"This oxygen mask is awkward. The voice of a girl speaking in Italian came to the phone. Her voice was a little immature, giving the impression that she was not yet eighteen years old.

"Who are you?" Xia Lei needed an answer, an exact answer.

"Okay, I'm ready, are you ready?" the girl's voice said.

"I ...... What to prepare?"

"Forget it, I'm coming for you. ”

"Hey, who are you?"

"Toot toot toot...... "There is only a busy sound left in the phone......

Xia Lei was still holding his mobile phone, standing there like a wooden stake, and he didn't move for a long time.