The death of the Emperor Taishang made Chang'an City in the Tang Dynasty a lot dull, and the curfew was carried out according to the original hour, and even the major entertainment venues in Chang'an City were also deserted, and this appearance should be maintained for at least half a year.

What's more, the immediate family of the royal family, that is even more forbidden to have sex, and Yang Heng is naturally also prohibited, you know, he is the direct grandson-in-law of the emperor.

So, okay, there is no entertainment during the day, and there is no entertainment at night, but for Yang Heng, it doesn't matter if there is or not, because Changle is pregnant now, however, for some evasion, Changle still drove Yang Heng away from his side, just for fear of some rumors, which would make Li Er difficult to do, and Yang Heng didn't care about these.

In this way, Yang Heng can only devote himself to the great cause of scientific research. However, what does he need to do, to study how to decompose gasoline, diesel does not work, this, he really can't get involved, can only describe to people, what this gasoline is like, what kind of oil is it, and what diesel looks like.

"Hey, by the way, I seem to have forgotten one thing, as a traverser, there is one of the most rich things I forgot."

Suddenly, Yang Heng remembered the glass mirror, you know, the glass mirror, even in his previous life, in Europe for a long time, it was the most profitable product, and even this thing has risen to the patent protected by the state.

By the way, when colorless glass was made at that time, did you arrange for someone to make a mirror? Not really.

Thinking. Thinking. Yang Heng slapped his head, this was originally a wide spread, and it was normal to be short of money, but how could he forget such a money-making project.

By the way, how are mirrors made? Silver-plated, silver-plated, aluminum-plated, this silver has. There is also mercury, but there is no metal such as aluminum, so let's study silver plating and mercury plating.

But who needs to find the research and manufacture of this mirror, the Taoist masters in charge of chemistry and their apprentices, no, they have now invested in the development of petroleum.

"Butler, you say, do we have a master who can make silver into silver liquid?" Yang Heng thought about it, but still wanted to ask the housekeeper. Because, the technician at home. But it all came through his hands, so the housekeeper knows best what skills these technicians in the family have.

"Turn silver into silver liquid, this, there really is no such person, Ah Lang, what are you going to make, maybe I can give it a reference?" The butler pondered for a moment and said.

"Oh, this, I want to coat the glass with a thin layer of silver liquid, it seems that my wish can't be realized, let me think of another way, right?" Yang Heng was a little disappointed.

"Ah Lang, you want to coat the surface of the glass with a layer of silver, right, then, I really know a person?" "Oh, butler, what is he doing, and where is he now?" Yang Heng was a little anxious.

"He's also a jeweler, but unfortunately, he's a counterfeiter, he will make the jewelry made of copper, plated with a layer of silver on the surface, or gold and then sell it as real gold and silver jewelry, but he let someone find out, and it happened to let me run into it, I saved him, and now, he is in our mountains, as an ordinary jewelry craftsman." However, his jewelry making skills are really not very good, and he can only make some low-end products, but he is happy to do things with us. "It turns out that there is such a capable person under him, cheating, yes, yes, it's him, and now he doesn't have any tasks, and no one even values him.

"Butler, what's his name?" "Let me think about it, like, his name is Jia Zuo, and I remember him because of his strange name." Well, with this name, I know that you are a fake.

"Ah Lang, I'll call him." "No, I'll go find him myself, and besides, is there still an idle house in the mountains?" "Yes, yes, it's right next to that glass research room, but Lang Jun wanted to build a few more, and this was built, but it was useless." At this time, Yang Heng also remembered that at the beginning, he asked him to build some more houses, and this house was really built for the study of glass mirrors, but at that time, because the colorless glass was not manufactured, the house has been idle, and even after the colorless glass came out, Yang Heng also forgot about the mirror.

"Then, butler, you are busy, I will go to the mountains by myself."

…………

Yang Heng really feels so lucky, this Jia Zuo, he is really capable, he even uses chemical methods to plate silver for this silver plating, and the first time he asks him to plate silver on the glass, he can plate the glass with spots, in this way, it is not very far from success.

"Ah Lang, I didn't expect that it would be so difficult to plate silver on this glass, it is quite simple to plating on copper, you can rest assured, I will improve the formula immediately, and it is estimated that it will be plated soon." Jia Zuo said with some trepidation.

He is actually very grateful to the housekeeper, if there is no housekeeper to save him, then he will die in prison now, but now, he is living in this place peacefully, although the salary is not very high, but it is enough for him to eat, and it is said that as long as he saves enough money, he can marry a beautiful woman as a wife, I didn't see that many technicians around him have married wives, and some even marry two, I really envy the dead, but it is much stronger than the one he has been running around before.

"Haha, it's okay, don't rush, take your time, if you really succeed, I will give you a mentor position." Talent, he is not even worse than those Dao elders, and Yang Heng naturally will not let him go.

"Ah Lang, what you said is true, I, I'm so happy, thank you Ah Lang, thank you Ah Lang, I will definitely work hard and strive to complete the task in these few days."

Mentor, what a face-saving position, and when you become a mentor, that is, you can marry two palace maids, what is this palace maid, it is the existence of beautiful women, Jia Zuo was excited, and he didn't even bother to talk to Yang Heng, so he went straight to the laboratory.

"This guy, I'm really in a hurry, Jia Zuo, don't worry about it first, I'll tell you what the specific effect of this thing is." "Okay, Alang, you say." Jia Zuo was a little reluctant, what to say, isn't it just Duyin.

"Let me tell you, Jia Zuo, this is a big project for me to make money, this thing is very demanding, this glass is silver-plated, on the other side you have to see that it is quite flat, people shine on it, just like looking at real people, can you do it?" Yang Heng didn't want him to burn the glass in potholes, if so, how could he use it and make money.

"Let me think about it, Ah Lang, you are going to make a mirror, right, glass mirror, don't say, this thing is really good, if it is smoothed, it will be much clearer than the copper mirror, okay, I took this job, don't worry, Ah Lang, within half a month, I will give you a finished product, and I will definitely see that the people inside are exactly the same as real people." Jia Zuo said confidently.

"Well, I believe you, but you must keep this recipe a secret, this is a project to make a lot of money, and you can't leak this recipe."

"Don't worry, Ah Lang, I know that everything in this mountain is confidential, and I will only give you this recipe, and I will never let people steal it."

It seems that after a long time of hearing and seeing, Jia Zuo naturally knows that everything in this mountain is secret, unless it is a secret handed over by Yang Heng himself, otherwise, no one will steal any formula, because the guards in this mountain are too strict, maybe others don't know, but as a fake person, he must always be vigilant, so he knows some things at a glance. (To be continued......)