When night fell, everyone went back to rest, and only Yichun came to Li Yunfei in the name of delivering tea, and then sat quietly on the side, looking at Li Yunfei's work with some fascination, Li Yunfei didn't know what to do with this, so he simply continued to do his own formation research as if he didn't know anything.

This research is in-depth, and it is really possible to forget everything external, such as the recent research on a very special formation, temporarily named the time and space travel array.

I vaguely remember that I had the experience of activating this magical space-time travel array a few times, maybe I studied this formation thoroughly, I could figure out why I came to this world, and I could also find a way to go home.

Suddenly, a gust of autumn wind blew, and the window was blown open, and at the same time, the drawings on the workbench were disrupted, and Li Yunfei's thoughts were also interrupted.

"It's already autumn, maybe it's time to go north." Feeling the intention of autumn, Li Yunfei suddenly remembered that he had promised Tang Jieshu to go to the north.

"Big brother, don't you miss that Tang beauty in the north!" Yichun, who had been staying quietly 'reading comics', suddenly said.

"Uh, why haven't you gone back to rest yet?"

“…… It's really sad that he was completely ignored by his eldest brother. ”

"You can't say that, this is completely ignored by treating you as your own!"

"Brother, don't divert the topic, do you miss Miss Tang?"

"Well, if you don't say it, I don't want to, but as soon as you say it, I really miss her, it's been a long time, it's a very interesting good girl with a unique temperament!"

“…… Will you take us with you when you go north this time? ”

"Of course we have to go together, and we will go together when Yumo and the others return to the mountain after training. If you don't want to go, I won't force you. ”

"Of course we want to go, we won't disturb my brother's good deeds, right?"

"Sister, you think too much, Miss Tang and I are very pure friendship...... What book are you reading? ”

"This, Xiao Chen brought it back from Shanghai last time, Superman Comics!" Yichun handed the book in his hand to Li Yunfei.

"It's really a superman comic, and the little pants are worn outside, which is really personal."

"This Superman seems to be very powerful...... However, I think it's still my brother who is the best. ”

"Thank you for the compliment, there is still a considerable gap compared to Superman, but when will you be able to understand English?"

"Brother doesn't often say that it's always good to have more knowledge, so I learned some English with Sister Yumo, and recently I have learned a lot of Japanese!"

"Are you going to be a translator?"

"Of course not, don't you always say that in order to destroy the enemy, you must first understand the enemy?"

"Well, you have a point...... By the way, have the girls reported their size? The reserves of Mithril are enough to make a batch of cuirasses. ”

"That's already ready!" Yichun quickly took out a stack of papers and handed it to Li Yunfei.

"Eh, isn't it just a simple number, it takes so many ......" Looking at more than a dozen pictures of naked beauties, there are pictures on the front, side and back, which really surprised Li Yunfei.

"Girl, what do you mean?"

"Isn't it necessary to know the shape of the body to make a cuirass?"

"Where do you need to be so detailed, you know the approximate bust waist circumference and shoulder width is enough, you go directly to these pictures, I don't know the specific data?"

"Then why don't you let your sister let the eldest brother measure it on the spot?"

"Don't make a fuss, take out the measured data, and start making cuirass armor as soon as possible."

“…… Brother, can you change the style? Yichun took out the specific data and handed it to Li Yunfei, and said at the same time.

"It's a hassle to design different styles!"

"We've already designed it, as long as my brother agrees!"

"Show me if it's ergonomic!"

"Is there any such knowledge?" Yichun brought up another picture

"Of course...... Uh, what are you guys doing with costumes, all those bells and whistles? "Seeing the style of the cuirasse, I really can't speak, if it is used for filming and acting, it is really beautiful, but it is not practical at all, a protective breastplate, really make a pair of big breasts for what? Not only is it troublesome to make, but it also destroys the overall defense.

"Brother, this is what all the sisters chose after seeing countless armor styles, you are a good person to the end, and satisfy our hobby!"

"It's cumbersome, and it's not necessarily practical!"

"We can all help!

It is said that it is a woman's nature to love beauty, since it is a strong request of a group of them, Li Yunfei still does it according to their requirements, and for this reason, they also said that they will definitely work hard to maintain their figure in the future, so as not to be unable to wear it in the future.

Originally, those girls didn't want to paint the silver and shiny colors, but this request was vetoed by Li Yunfei, and they were directly painted with gray paint, avoiding the fate of being a live target with silver glitter.

"Go back and rest early, it's not a good habit for the girl to stay up late!"

"Then don't bother brother, good night!"

"There is a certain time limit for exercising internal strength every day, too much, girl, don't overdo it!" Seeing that Yichun's life field had some overabsorption, he deliberately instructed.

The energy produced by the cells of the human body will form a life field, and it is excellent to absorb excess energy and refine it into true qi, if you exercise your head and absorb too much energy, then the balance of the life field will be destroyed, which is not good for the body.

"Got it, I'll pay attention, goodbye big brother." Yichun replied and left directly.

Li Yunfei, who was not disturbed, began to study the space-time shuttle array again, this thing may have a lot to do with why he came here, but this energy array is an energy array that can only be driven by borrowing the power of the primordial gods.

The memory recovered from the dream also knew how to use the power of the Yuan Shen to activate the energy array, but Li Yunfei was a little strange to find that he could not release the power of the Yuan Shen at all, and he tried several times without success, not even a trace of the power of the Yuan Shen could not come out, and the power of the Yuan Shen seemed to be sealed by something.

So now I can only use another trick, hoping to design a way to gather the power of chaos (dark energy) to replace the power of the primordial gods, because the power of chaos can be converted into any energy fluctuations that exist in the world, so in principle, it can also replace the power of the primordial gods and activate the space-time shuttle array.

If the known method wants to gather the power of chaos, it can only use spiritual power, and the current range of spiritual power is only a few hundred meters, and the power of chaos within a few hundred meters of this world is far from enough to activate the space-time travel array, so we need to think of a way to expand the increase of spiritual power by a hundred and ten times......

The 25 basic energy circuits made of the most basic Mithril were lined up on the table by Li Yunfei, constantly swinging around, hoping to find a special formation to increase spiritual power.

The basic function of each energy circuit is clear at a glance, and I also know a rough idea of what kind of effect may occur when that and that combination together, but after the combination is completed, Mooney will know the general situation in the brain, and if there is any doubt, I will really activate the careful experiment.

The most basic 25 energy circuits, how many energy arrays can be combined, no one can say, theoretically endless. Just as a few simple gestures can be combined into countless Chinese characters, countless Chinese characters can be combined into countless articles and express countless meanings......