It's possible to practice magic this way, right?

After half a day of dismantling, the altar and the teleportation array on it were finally dismantled. There was still some gain. Among them was the mithril that Lin Li had been dreaming of, but it was just a small piece, which was processed into parts and was removed from the machine. Adding the original piece, it was still not enough to make a long sword.

Apart from this piece of mithril, the rest were all metal materials. Most of them were unfamiliar to Lin Li. Lin Li conducted simple experiments on all the materials. Mainly to test the suitability of the elements and the penetration of mental power. Finally, he packed the materials that he felt were useful together. It only filled up a 1 cubic space ring.

"I'll find a professional to do the appraisal when I get back."

At this time, Christine looked at Lin Li eagerly.

"Where's my share?"

Lin Li looked at Christine's pitiful appearance. It would be unreasonable if he didn't give her some. Even if she was a maid, she couldn't be exploited so harshly.

"It's hard to determine the price of these materials. I won't give them to you. I'll just give you gold coins."

"Besides, I've been a maid for such a long time since I lied to you. Let me pay you a salary together. I'll just give you 1 gold coins."

As he spoke, Lin Li took out 100 purple gold coins, put them in a bag and handed them to Christine.

"Is it enough?"

"1? That's enough, that's enough." Christine happily took the purse.

With this money, ordinary people can live a very carefree life.

Lin Li smiled, looking at Christine's happy face, thinking to himself, laugh now. My money is not so easy to take. I have to trick you into being a maid and driver for a few years. Well, occasionally I have to work as a thug part-time.

After making sure there was nothing left to take, Lin Li asked Christine to go back.

When returning to the lobby on the first floor, Lin Li suddenly thought that the scroll that Christine found could just destroy the metal puppet. Wasn't this too much of a coincidence?

"Where did you destroy the metal puppet with the scroll? Take me there."

"What's so good about it? It's all blown to pieces."

"Don't you think it's too much of a coincidence that you just happened to find the scroll that can kill the golem?"

"That's my good luck."

"That shouldn't be a matter of luck, but someone left it there on purpose."

Lin Li came to the place where he used the scroll last time. As expected, there was only a pile of residue left. All of them were small metal lumps.

"Do you remember what the effect of your last scroll was like?"

"It was just a white light. It shone on the puppet, and then the puppet fell apart."

"That's right, it must have been left there intentionally by someone else."

"Why? The puppet is no longer needed so it's just there. There's no need to keep a scroll specifically to deal with it."

"You don't understand. This can prevent technology leaks."

"The second floor is a forbidden magic space. If a puppet goes up there, it will instantly become immobile. But the immobile puppet can still be moved away and disassembled. This way, you can learn a lot of manufacturing techniques. So a scroll was specially left to deal with it. If it is disassembled like this, you won't be able to learn any techniques."

Lin Li continued: "I thought of a possibility."

"This building should be specially built for the purpose of fighting back to their own world. The teleportation array should be a stable two-way teleportation array. In order to prevent the creatures from the opposite side from attacking, the portal was built inside this magic-forbidden building."

"Those creatures that invade them should rely more on magical abilities. After their magic is banned, they may no longer pose a threat."

"After they got their own world back, they all moved back. This underground city is so clean because they took away everything that could be taken away. They left a puppet behind to deal with some minor problems left behind after they left. After that, they let the puppet wait at the door leading to the second floor. This is the only way to go up. No one who comes in can avoid it."

"In order to prevent the puppet manufacturing technology from being leaked, they also left a special scroll."

"No magic can shatter a puppet like this. This scroll should be used to break up the puppet."

"What if I don't find the scroll? What if I defeat the puppet directly or get killed by it?"

"If the first person is killed by the puppet, we can wait for the next person to use it. Killing the puppet directly will also greatly damage it."

"Besides, people like you know to use scrolls when they can't win, and others will most likely do the same. The success rate is still quite high."

"Is that scroll easy to find?"

"It seems to be true. I found it in the first room after entering."

"See, it's such an obvious inducement. It should be correct."

“So, this underground city was already clearly arranged when they left.”

"And that teleportation array is probably also a retreat route they left for themselves."

"You should know that the magic-banning effect of this building and the defensive formation on the outer wall have not failed at all."

"If we get defeated again someday, we can still run back straight away."

"It seems that we did the right thing in dismantling it. It is much safer now."

Kristen thought about it and felt that what Lin Li said made sense.

But seeing the book floating next to Lin Li, he couldn't help but ask: "What about your book? Since they were ready to move out normally, why did they leave this book behind? Did they forget it?

"Maybe it was forgotten. Or maybe it was not circulated after the original owner died. Instead, it was hidden in the basement of that library."

"It may also be because they no longer need this book. The biggest function of this book is to create those long-lasting lighting plants. And their original world has the most suitable living environment for them, so naturally they don't need this book."

In addition, Lin Li thought of another possibility. This book might also be a backup plan they left behind.

After taking this book away, some problems may occur, including damage, loss, etc. And taking it away will not be of much use.

This world is their retreat, so it is better to leave behind books that can only be used in this world.

So Lin Li guessed that if they really came back to this world again, they would definitely find a way to get the book back, because it was a necessity for them to live in this world.

Although he thought of this, Lin Li still couldn't bear to destroy it directly.

Not to mention the black technologies mentioned above, Lin Li had never heard of magic weapons with their own power.

However, Lin Li has decided that he must check the book carefully after returning to Tianyun City.

The two quickly left the underground city and returned to the misty jungle.

"You also marked the way back."

Kristen lowered her head and said embarrassedly, "No...no, I was seriously injured at the time, and I didn't have much food left. After I came out, I thought I would not survive, so I just chose a direction to go."

"Forget it, let's just go back the way we came."

It was three days later that the two walked out of the foggy jungle.

When they came out of the misty jungle, Lin Li said to Christine, "You are free now."