"I knew that the super holy weapon is not that easy to use." Xiao Chen said. "If the situation of the seven towers is similar to that of the Spirit Tower, how many crystal stones will be consumed!"
"Although I don't know the current situation of the other six towers, the essence of our seven towers is the same. If you can find them, they should all be in this state. We calculated that the cost of a real battle of the Seven Saint Towers would be about one hundred tons of crystals."
"One hundred tons?" Xiao Chen gasped. "This consumption is equivalent to the annual output of several large crystal mines under the name of China Tower. I wonder how many machines can be started and how many guns can be equipped."
"After all, you are exiling a god to another dimension, so the cost is huge. You need to accumulate a large amount of magic crystals in these two years." Tower Spirit said.
"Now I regret that the territory I conquered is not big enough." Xiao Chen said, covering his forehead.
Then, they came to the ordinary library above. The library has two floors, one for ordinary books and one for professional magic books. The books are arranged in different categories on the magic-protected bookshelves. Xiao Chen and his friends took a rough look and found that many magic books here can supplement the magic collection of the Hewan New City Library.
Xiao Chen found an independent small bookshelf with a sign that read "Earth Books". There were quite a few books on the bookshelf, more than 200 in total.
"This is what I summarized and organized based on my memories before the time travel. It played a very important role in the development of the Spirit Tower." said the Tower Spirit.
"How come you can remember so many books you've read in the past?" Xiao Chen asked.
"You should know that the brain stores a large amount of memories, but because of forgetting, we have lost the means to obtain them. There is a holy spell in the Spirit Tower called Soul Exploration, which can find all the memories of your existence in your life and then fix them. It was only after I used this magic on myself that I remembered so many books. Of course, the price I paid was not small." said the tower spirit.
"This spell doesn't seem as good as it seems." Xiao Chen said.
"Yes. In fact, this spell is also a forbidden spell in the Spirit Tower. Only those who have been evaluated by two saints are qualified to use this spell on themselves or others. As long as one saint thinks it is inappropriate, this magic cannot be performed. But even so, this spell is still very dangerous. Because thinking and remembering the memories of the past life in a short period of time puts a lot of pressure on the soul. In this case, if the person being cast has any unbearable memories deep in his soul, it will cause more serious harm to him. Some people have a drastic change in personality or even mental illness because of this magic. Even I, after using this magic on myself, it took me more than a month to calm down because I missed the past world too much."
Xiao Chen could understand what He Jin said. When these time travelers came to this world, no one would not miss every bit of their past lives. If the voices and smiles of their loved ones and memories of their past lives suddenly came back to them, it would be very sad. If this person had experienced a major misfortune, it would be very painful to experience it all again.
Soul exploration seems to be a very dangerous magic, but Xiao Chen is very interested in it. "Ta Ling, do you still remember this magic?"
"This holy magic is recorded in the inheritance room. If you have the right qualifications, you will naturally be able to learn it. However, I still want to remind you how dangerous it is."
Xiao Chen nodded and reached out to the bookshelf. The magic protection light curtain on the bookshelf naturally retreated to both sides. He picked up a book and found that it was a psychology outline. He glanced at the table of contents and found that it was similar to the psychology books he saw on Earth. However, a chapter was added at the end: The guiding significance of psychology to soul magic.
"Lots of psychology books."
Ta Ling said: "Before I traveled through time, I was a teaching assistant majoring in psychology."
"Huaxia University?" Xiao Chen asked.
"How do you know?"
Xiao Chen said: "I know a lot more things. According to the time you traveled through, you should be active in the eastern part of the campus, right?"
"Yes. What's going on?"
Xiao Chen said: "Don't worry, I will tell you slowly later."
When Xiao Chen and his group came out of the library, Mao Kai had already held the two books in his hands. "It's interesting. Take it back and read it first. It seems to be helpful for a magic model problem I was thinking about before."
After that, they visited several laboratories. The laboratories of the Spirit Tower had a special feature. Most of the laboratories had two common devices. One was a transparent glass room. The tower spirit told them that this was a device specifically used to restrain souls, called the Soul Chamber. After any soul was thrown in here, it could show its own form, and the data of various mental fluctuations would be measured and displayed on the light screen next to it. The mages of the Spirit Tower would use this device to test soul magic.
Another device was like a transparent coffin standing upright, with various brackets and shackles inside to fix the limbs and head. Obviously, this set of things was used to deal with living people. According to Talling, some magic experiments must be performed on living people, and this was their experimental table.
Seeing this, Xiao Chen and the others felt a little cold in their hearts. They wondered how many people had cried and howled here for the Spirit Tower to achieve its current success. The mages of the Seven Towers era were definitely not messengers of justice. When they fought against the gods of nature, they often used any means necessary.
Each laboratory has a special bookshelf with many experimental reports arranged in chronological order. The experiments conducted by the Spirit Tower to study the soul are very detailed, and many of them are specific to the effect of a certain magic on a specific group of people, or the effect of different auxiliary materials on the same magic.
When Mao Kai came out of the laboratory, he had two more experimental reports in his hands. "I have to say that the Seven Towers era with the participation of time travelers and the current era dominated by empires and kingdoms are completely different things. That was a much more developed civilization than the present. Look at these reports, whether it is logic or format, or even writing standards, they are all the standards of our time. Putting them in the current laboratory of Hewan New City, it is not abrupt at all. In my opinion, the things we found in the library and laboratory are even more valuable than the Spirit Tower itself. They can greatly reduce our development time in many fields. I suggest that all these materials be transported out, and immediately connected to the school through the teleportation array, and all these materials be transported back and put into use immediately. I believe that we will soon be able to achieve breakthrough progress in many aspects." (To be continued)