"The black one is the immune agent, and the white one is the buffer agent. It will be more comfortable if you use it. If you don't use it, the user's body will maintain a slight burning sensation for up to eight hours. This feeling will not be fatal and will only cause minor damage to your body. Of course, if someone with sufficient recovery can ignore it, if it doesn't work, you must inject the buffer agent later."

Zheng Yichen explained quickly.

"injection?"

The person in charge keenly heard something special in Zheng Yichen's words.

"Well, injection, this kind of drug must be effective through blood to quickly achieve results, because injection is the best way and can effectively reduce costs. After all, by drinking, you have to use twice the dose to achieve sufficient results."

"Okay, I understand. The church will be put into use for a certain range after testing... By the way, what did you inject it?" The person in charge nodded and put away the two bottles of sample potions. Next to it was the formula for this black and white immune potion.

"This, do you want to buy and order this? After you have a syringe, you can reuse it as long as you clean it. For needles, you can buy a lot of them as disposable consumables, and that thing is not easy to clean." Zheng Yichen took out several syringes of different specifications. Cleaning up is not something you can say casually. There is no disinfection cabinet in another world, and disinfection cabinets may not be useful for this kind of thing.

But they have magic, and those who use magic can achieve sterile disinfection.

"..." Looking at the syringe that Zheng Yichen had prepared, the person in charge couldn't help but look at him more, resisting the urge to say that you are really a profitable businessman. This kind of thing is cheap at first glance and needs to be produced in large quantities. Speaking of which, Zheng Yichen seems to be very good at producing these fine things, which other alchemists can do, but it is a waste of time after all, and it is impossible to devote all his energy to such production.

Even if it takes ten seconds to produce one, sixty is ten minutes! Thousands of days will almost pass, and what about the cost of this kind of thing? A few copper coins per one! Small ones are cheaper, which means that the price required for thousands of syringes is only about one gold coin... The price that is low can't be lower anymore. How could those alchemists be idle and have nothing to do with this kind of thing?

Spending a whole day to make something better is not just this price, their time is really gold coins.

So I don’t know how Zheng Yichen has a large number of products. On the premise of quickly producing such things, the relevant market competitiveness is very low, and basically no one competes with Zheng Yichen. This has led to a monopoly in Zheng Yichen’s online store, which has always been a monopoly state. The inventory of those products is unlimited, which has led to some merchants being unable to help but "purchase" from Zheng Yichen.

As the same goes, when others think that the money of a copper coin is not money, the merchants attach great importance to the interests of this copper coin. It’s a lot to accumulate!

Zheng Yichen has extremely advantageous in the development of many aspects. The same is true for the current syringe. Isn’t it just thrown after using it at a low price? As for using magic disinfection and restoring it to its original sterile state, I think too much. It’s better to buy two new ones than using magic!

In addition to this kind of thing, there is also a kind of plastic bag thing. This thing is also a hot commodity sold in Zheng Yichen's online store. After all, that thing can be used after taking it out. Although it is not like an expansion bag, it is very applicable. It can be used when buying some bits and pieces, and it can also be used when buying some breakfast.

All major shops are prepared. For merchants, they like this kind of thing very much. In the past, some people bought things, especially when groceries, and they basically gave a bag in the store. However, those bags were not cheap plastic bags, but cardboard bags or cloth bags. Even though they were not made of good materials, at the price, a cardboard bag could buy ten plastic bags. As for cloth bags, it was a dozen!

In this way, those shops like the plastic bags and consumables made by Zheng Yichen too much. As for the pollution issue... Well, there is no pollution here in the other world. After all, there is free elemental power in the air and earth elements underground. After things are buried, they will be affected by the elemental power. There will be two situations in the dead, either the retention time is far greater than the earth, or the decay speed is faster than that of the earth.

Plastic bags are not made strictly in the way on earth, and they also have magical participation. Although they are not considered magical products, because of magic, their attraction to free energy is larger than that of conventional dead objects. Therefore, the existence of this thing is at least ten times shorter than that of plastic bags on earth, and it will almost decay in about ten years.

However, plastic bags are updated very quickly, so it should be a long time for ten years. Anyway, after a large number of such cheap things are sold, there is no need to consider hoarding. The out-of-stock shops directly purchase goods in the online store in the Summoning Book of Magic Soldiers. There is no need to store too much, and even the village has been stored for more than ten years and cannot be used up.

In addition, there are water pipes and other things. The materials of that thing are better than plastic bags. As long as it is not maliciously damaged, the time it can be used is at least decades. Whether it is pipes or other things, various daily consumables, Zheng Yichen has made a lot of trouble, and has been subtly changing the style of many details in the other world...

Well, the process of invasion of the earth style does not require someone to vigorously promote it. Just change it bit by bit in many details. These details can be started from daily necessities or conveniences. With a certain degree of convenience, it will gradually improve this "convenience", just like boiling a frog in warm water... It doesn't need to be particularly exciting to you from the beginning.

What awesome thing, this thing is so powerful and awesome, how did it come up with... Oh? Why is the style of this thing different from our world? Zheng Yichen said that he has time and it is not a problem to have a century-long plan, so the problem of incompatibility of the style can be changed bit by bit. When something more and more powerful gradually appears, no one will think that the style of the style is different.

For example, I saw a little sister three years ago. After seeing her three years, she would feel that she grew up very fast and changed a lot. But if she had contact with her every day, she would not feel like this.

In short, Zheng Yichen said that he was driving very steadily and would never overturn at some point because of the speed of the car. After all, there are many major forces in this world. Zheng Yichen did not come into contact with much of the Dark Church, and he could not ignore it. The Church of the Holy Church is more like the protagonist of the times.

The one who blocks me is not Zheng Yichen's original intention, so he naturally needs to change the style of painting steadily. The power of habits is powerful. Take the people on earth for example. Suddenly, the phone is completely paralyzed and the computer is scrapped. I don't know how many people will feel uncomfortable and want to go wild.

After that, the water and electricity will be cut off. If you want water, you can only be lifted by yourself. If you want electricity, you need to pedal the generator to generate electricity... Who wants to experience that kind of life without any trouble?

Take the present for example. Whether it is a cheap civilian joint venture, the water pipes and faucets that can be connected to joint ventures, or a very convenient plastic bag, it will be very inconvenient for those who have adapted to these things. In addition to these, there are too many other miscellaneous items in Zheng Yichen's online store, such as folding chairs, schoolbags, shoulder bags, etc.... Well, it won't make people feel abrupt.

After all, there are those things, but the style and design will not look very convenient. Zheng Yichen made him prefer the earth-based style, which greatly increased its practicality. However, it is easy to imitate such things. Things like schoolbags, shoulder bags, travel bags, can be made by excellent tailors. If you fold a chair, carpenters can easily be competent. Why don’t some Zheng Yichen want to admit that others do better than theirs!

Tsk!

No matter what, he is just a guide and pioneer, deliberately leaving traces of the earth in the other world, so why not let them develop such a system by themselves? As long as the road is paved, the power of inertia is placed there, even if he no longer serves as the guide in the future, according to the power of inertia, the style model will already exist, and the subsequent development will not be much deviation.

Therefore, Zheng Yichen often perfects the "puzzle" from the basics bit by bit. When doing certain things, as long as there is a chance, a "novel" thing will appear in the eyes of people in other worlds. These things are all taken out with the needs of the time. The biggest feeling is that in addition to novelty and convenience, Zheng Yichen is creative enough and can always create the convenience products they need when they need something.

It was just right to take out the syringe at this time, and it started from the church, which was equivalent to getting a legal certificate... And based on the experience Zheng Yichen had obtained before, I believe that after this thing was circulated, people from other worlds would develop new uses.

For example, things like infusion devices, after all, there are already plastics. Zheng Yichen has already guided the basic sections to let others use their IQ and use these basic sections to spell out new pictures.

"This thing... well, it looks very useful, I will report it." The person in charge of the isolation camp looked at the syringes and put them away, muttering in his heart, why do you think that the more you look at this thing, the more you think researchers in the life field will like it?
Chapter completed!