Next, Li Yuanjing personally watched the operation of the steam engine, and it was indeed as Yu Guang said, the movement was not small, but it was useless.

According to the current urine properties of the steam engine, it is a question of whether it can be pulled by itself when it is installed on a car that can carry it, let alone used for work, and the leakage is simply doubtful.

Li Yuanjing didn't know how the rubber was refined, and he could only figure it out by those 'scientific research dogs'.

But there are only three adult fig trees, and even if you chop them into powder, you won't be able to extract much latex, so you can only experiment with them one at a time.

However, these are not things that Li Yuanjing needs to worry about, after ordering the things here, Li Yuanjing came directly to Cai Xu Kun's glass workshop.

There is a new glass here, although not much.

Perhaps due to the limitations of the process, the thickness of these glasses is very worrying, just like tempered glass, but very brittle.

Li Yuanjing tested it a little, and a small stone could be smashed with a little force.

It's a heart with tempered glass, but a body as fragile as paper.

"Hundreds of times into steel, will this glass improve its hardness if it is refined a few more times?" Li Yuanjing asked pretending not to know.

"I haven't tried this yet, why don't you try it?" Cai Xu Kun shook his head a little confused, he has been devoted to women all these years, although he has not ......

"Try it!" Li Yuanjing nodded.

The production process of tempered glass is actually not difficult, and the principle is very simple, 100 refining into steel refers to the fact that if you want to refine a piece of iron into steel in the blacksmith shop, then you need to beat it more than 100 times in the same part to do it, which is only one part.

But tempered glass can not be played like this, not to mention a hundred beatings, even a knock can not stand it, therefore, the requirements for the manufacture of tempered glass is to evenly heat to a high temperature of 700 degrees, and then maintain a thickness of about one millimeter for about 50 seconds according to the different thicknesses, and then quickly and evenly cool, about one millimeter and thirty seconds, so that it is done.

The premise is that Du Niang does not deceive people, of course, in Li Yuanjing's view, Du Niang must be a deception, he does not doubt that this will make tempered glass, but only theoretical methods, and no practical operation methods, according to this statement, it can be done that is called cheating.

However, Li Yuanjing is not square at all in his heart, if he can't do it once, he will do it twice, three times, and there will always be one time, anyway, it is not himself who is in trouble.

But tempered glass is really important, not to mention other places for the time being, just put it on the ship can play a big role, can ensure the light in the cabin, and the command cabin does not need to go to feng shui and sun, which has a great effect on long-distance sailing.

The first experiment quickly ended in failure, the second experiment continued, but it still failed, then the third, the fourth, until all the glass stored here was used up, Li Yuanjing did not find a way to make the glass hard, although there were one or two times that it did feel a little harder, but it was only two or three times to persist in the attack of small stones.

Temperature control is the key, 700 degrees is just at the critical value of glass melting, but now this technical condition is really difficult to monitor the temperature, so you can only rely on feeling.

Anyway, being idle is also idle, Li Yuanjing directly ordered someone to go to the glass workshop to bring some finished glass to continue the test, the temperature is definitely no problem, although the dish Xu Kun is a little dish, but after all, he is a glass craftsman, and his professional knowledge is still a little, and he quickly found a suitable temperature position.

Then, under the command of Li Yuanjing, various ways were tested to cool down, natural cooling, put it in the cellar to cool down, throw it into the water to cool down, throw it into the ice water to cool down, and even put it directly on the ice surface to cool down.

But the effect is not ideal, but it also proves one thing, that is, it cannot be put in water to cool down, and the glass will bubble......

Li Yuanjing was really a little troubled by this series of experiments, and how to quickly and evenly cool down became the biggest problem that plagued him, and in the end, he simply threw it into the ice cellar.

At this time, Li Yuanjing seemed to have discovered a new continent, and at the beginning, there would be various situations, such as direct fragmentation, or failure in other ways, but after summarizing it a few times, after adjusting the time from the furnace to the middle of cooling, he finally made the first piece of tempered glass.

Holding a small stone of the same size, he smashed it five or six times with the same force and did not break it.

And Li Yuanjing didn't understand the standard of inspecting tempered glass, anyway, he knew that when he saw someone smashing tempered glass, he smashed a corner, and then it shattered into countless pieces in an instant, which may break at once, but it will not fall down, or it may fall directly at once.

Li Yuanjing, who was idle and bored, asked people to bring a hammer to test it, but the glass really broke into countless small particles.

Tempered glass is divided into many kinds, different types of requirements are different, for example, for cars, it is necessary to add explosion-proof film in the middle to prevent splashing and hurting people when it is broken, but Li Yuanjing does not have this thing, so he can only settle for the second thing, and use double-layer or three-layer glass to deal with this problem, which is better than nothing.

Next, Li Yuanjing threw the job to Cai Xu Kun, asked him to study how to improve the yield rate, how to mass produce, and clearly told him that he would use it on the ship next.

The days passed, although Li Yuanjing didn't think about it, and he didn't think about these problems, but there were more and more people in the mansion, and under the command of the officials of the Ministry of Rites, they were constantly busy, and Li Yuanjing's Zhao Wangfu seemed to have become their home.

However, in the face of these annoying officials of the Ministry of Rites, Li Yuanjing couldn't be angry, and asked people to send some ice water to condole, so as not to cause heat stroke.

In fact, during this time, Li Yuanjing also wanted to open, isn't it just getting married, it is a knot sooner or later, and he can't hide from the fifteenth day of junior high school, what do you like, you can sleep if you see it, and if you don't like it, you will sleep with Wang Xiaoyi, anyway, you will definitely not let yourself sleep because you are married.

The court attaches great importance to the marriage of the prince, so the princess must be the person who is agreed and approved by the court, and this also involves the gift of the court.

But for concubines, the court doesn't care, what's the matter, even if you don't care about the princess, it doesn't matter, as long as you are willing, as long as the above doesn't want to take care of you.

"Didn't your father beat you up when he beat your brother?" Looking at Cheng Chumo, who kept wandering blindly in front of him, Li Yuanjing couldn't help but bury himself.

"Hehe, I am a good baby, why did my father beat me?" Cheng Chu smiled silently, expressed strong dissatisfaction with Li Yuanjing for throwing himself back before, and seriously condemned it!

Although Li Yuanjing wanted to defend himself, he still stubbornly said: "This king is for your good, you stupid don't want to think about it, what is your father's status?" How much work has been done? Even your dad has to play leisurely, let alone you? In case this time you are so powerful that you can't control the scene, how do you say Your Majesty should reward you? If you don't give it, it's unreasonable, if you give it, you're not afraid of high merit? ”

Cheng Chumo nodded subconsciously and accepted Li Yuanjing's statement: "Although what you said is very reasonable, I still have to despise you......"