Looking at the three-headed Hai Dongqing in front of him, Yang Heng had an indescribable feeling in his heart.

Although he had a feeling that this Hai Dongqing would surprise him, it was just a feeling, but he really saw the three-headed Hai Dongqing who came back, and Yang Heng was still surprised by their image.

To say that the two little Hai Dongqing have grown up and grown stronger, especially after this ultra-long-distance high-altitude flying cross-country training, it is a standard muscular, perfect body shape, that is, it is a big white, it has also changed the appearance of some fat some time ago, and has recovered to, even a little more than the body type when Yang Heng first saw it, naturally it was the body type before the injury, maybe it was good to eat at Yang Heng's house during this time, and hunting was only an occasional action, even to send letters, and rarely flew to the sky, how to say it, It's just that I'm a little lazy and fat.

Looking at their sturdy bodies, Yang Heng can even describe the scene of their flight in his mind, when they fly in the vast sea and ocean, sometimes in order to find an island, fly in the sky for a long time, maybe the two little Hai Dongqing will fall behind, and the old Hai Dongqing will continue to fly with them on his back, and there is only one belief in his heart, that is, to find the kind of plant that the little master wants, if they have human thinking, maybe they will consider, where did the little master know that there is this thing, And to run so far, to know that you know the way of your own thing, that is when you were in love, you went to explore the unknown place with your dear and went to that place.

When it thinks of its mate, it feels a little sad in its heart, and this old scene is still there. And the old man. Ah no. The old bird was no longer there, but looking at the pair of children in front of him, it began to get excited again.

My dear, don't worry, I will definitely train this pair of children to become the overlord of the sky, you didn't expect that I would take them to re-embark on the route of our love journey.

This, Yang Heng shook his head. How could he think so much, although he regarded these three Hai Dongqing as partners, even the baby didn't treat them as any playthings, that, the baby let them find things, just a game, yes is a game, there are only rewards in it, but there is no punishment, you must know that the more fierce the Dao is. The more they can feel the good and evil of people, maybe they sometimes ignore Yang Heng. But for the baby, that's 100% like.

"Big white white, little white white, little little white, you are so pitiful, look, you have all suffered, you can't find it, you can't find it, where did you find it, it took so long to find it." In front of the baby, he just happily went to report the news with Yang Heng, and now he took a closer look at the image of the three Hai Dongqing, and naturally found that they had lost weight at a glance, and even the eye circles were a little red, it seems that Yang Heng thought well, and the baby also took Hai Dongqing as a partner.

"Woo, woo......" Da Baibai chirped in a low voice, and even rubbed the baby's face with his head, and Xiao Baibai, Xiao Xiaobai didn't seem to understand too much, but he was also familiar with the baby, and followed their father to rub the baby's body with his head.

"Giggles, giggles," the baby laughed vigorously at Hai Dongqing's rubbing, "Da Bai Bai is good, don't be so reckless in the future, sister maid, bring meat to them, and ask for the best beef." ”

Not to mention the interaction between the baby and Hai Dongqing here, just Yang Heng, he actually has something, when the baby came, he received a message, but before it was completed, the baby came, and for the sake of the three-headed Hai Dongqing, Yang Heng did not deal with the new thing in time, and now seeing that Hai Dongqing has nothing to do, he is relieved, he entered the mountains again.

This is still a relatively simple thing, an irregular circle, and even a bulge on it, but the filament inside and the lead on the outside let Yang Heng see that this is a light bulb.

"Owner, we will work harder for the time being, this is our first finished product, after the test of hot water and cold water, there is basically no air leakage, but what is this thing for, such a thin glass, and there are so many wires in it?"

"Ha, this, I'll test it for you right away, let's go to the generator, I want to see if this thing is reliable." Needless to say, this is the most primitive light bulb, but Zhang Glass's assistants have not yet mastered the process, but this first product can be used.

"Wow, that's bright." "Poof." Just when everyone sighed, there was a puff of white smoke in the bulb, and the life of the first bulb was less than half a minute, and it died gloriously.

"It's not bad, I can hold on to it for a while, which means that your process ideas are still right, but you have to continue to improve, and the brightness, some are too bright, that is, the air is pumped clean, but it will still burn out, you have to continue to lengthen the wire inside, design it evenly, let the outside glass shell heat more evenly, and the back of the glass shell can be thickened." ……

There are all kinds of suggestions, Yang Heng made a lot of suggestions, but the craftsmen felt that they were taught, and they all nodded mechanically, they were still shocked that the thing just now could shine, it turned out that the thing they made turned out to be an artifact.

If Yang Hengzhi told them what they wanted, he would definitely laugh a lot, this was something that was eliminated in the previous life, and the only factory that produced that thing was only produced by some small factories, and the quality was uneven, and even the bulbs with different pressure ranges were put in a box and wholesaled, plus some salespeople didn't know much about these things, so they sold them directly, and as a result, some people would change to more than a dozen bulbs for a while, why, All of them were screwed from 36 volts to 220 volts.

In fact, to say that the production of this bulb is really not simple, but the most important step, Yang Heng has solved it, and the others are not a problem, but where is the most difficult thing, naturally it is tungsten filament, although it was also tested for a long time at the beginning, but there is a general direction, isn't it, there is no need to study the bulb with Xiao Ai in the previous life, what bamboo charcoal filament, what this silk, that silk was tested over and over again before it was made, said here, Yang Heng had to admire the patience of the people of this era, Yang Heng pointed out that they gave them a way, they used all kinds of metal ores to refine this tungsten, although it was not faster than Xiao Ai in the previous life, but it also allowed him to master a lot of metal material processing and production, in fact, these experiments are also wealth, and they are not even lower than the value of this light bulb.

And the Taoist leaders in front of them still have some problems, one is to improve the production process, and the other is to improve the pumping capacity of the extractor, and even the process of sealing.

It is also important to use materials to make the glass shell and the metal shell stick together, and also consider the matter of thermal expansion and contraction, but this is easy to say, as long as you find it from some test paper piles, maybe there is a suitable formula for a long time, and the lamp mouth is easy to do, temporarily made with copper to make it, or even directly made into a stuck shell, not a snail shell, this stuck shell is simpler than the snail shell, and then the lead part, the lead is also two wires from the back of the lamp mouth, Then there will be a layer of hard bonding material on it, and then two small pieces of solder will be dotted on it, solder, at this time, the solder is not soldered with electric iron, but soldered with Huoluo iron, and the flux is directly used with pine oil, Huoluo iron, that is, a small piece of copper is tied with a piece of iron to form a simple Huoluo iron, and then according to the need to grind out the required shape, this is not very simple.

Some techniques may be difficult to think about, but in the case of knowing the principle of the Tao, it is still very simple, and some things are the principle of knowing the Tao, which also needs to be studied many times before the finished product will come out, this, Yang Heng already has a deep understanding, which has been honed in the past few years. (To be continued......)