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In order to improve the strength of the glass, through chemical and physical methods, compressive stress is formed on the surface of the glass, and when the glass is subjected to external force, the surface stress is first counteracted, so as to improve the bearing capacity, enhance the wind pressure resistance of the glass itself, cold and heat, impact and so on. Tempered glass has good thermal stability, can withstand three times the temperature difference of ordinary glass, can withstand a temperature difference of 300 degrees Celsius. The strength of a piece of tempered glass is generally several times that of ordinary glass, and the bending resistance is very strong. The biggest advantage of its use in car window glass is that its bearing capacity greatly improves the fragile nature of the glass, even if it is severely damaged and the glass is broken, it is also broken into many small fragments without acute angles, which greatly reduces the damage to the human body.

In 1629, in the Oriental Port area because it is located in the tropics by direct sunlight caused by a lot of broken glass, if it is the use of tempered glass, because its thermal expansion and contraction than ordinary glass has three to five times higher, to withstand the temperature difference between 250 degrees to 300 degrees will not have an effect, so as safety glass can not only be used in car window glass, but also can be used as high-rise building glass, for example, the "glass pyramid" that is about to start laying the outer layer of glass will use a large number of tempered glass, Not only the outer layer is beautiful, but also strong and durable, and the safety is good.

Of course, tempered glass is not without disadvantages, because it first needs to be heated to a close to the softening point of about 700 degrees Celsius, and then quickly and evenly cooled. After tempering, uniform compressive stress is formed on the surface of the glass, and tensile stress is formed inside, so that the bending and impact strength of the glass can be improved, and its strength is about four times that of ordinary annealed glass. The tempered glass that has been tempered can no longer be cut, ground or damaged, otherwise it will be "shattered" due to the destruction of the uniform compressive stress balance.

The hardness of the glass produced by rapid cooling is very high, for example, these tadpole-like "glass teardrops" are formed when molten glass is naturally dripped into ice water by gravity. Popularly known as "Rupert's tears", this glass has a wonderful physical property: the teardrop itself is no different from solid glass, and the hammer is unharmed, but if you grasp its slender tail and apply a little pressure, the whole glass tear will burst and shatter completely. The principle of Rupert's tears shattering, called "crack propagation", stems from the uneven pressure inside it: when the molten glass drips into the ice water, the surface of the glass rapidly cools to form an outer shell, while the glass underneath the shell remains liquid. When the glass in the core also cools and condenses, the liquid glass naturally shrinks towards the solid shell due to the change in volume, causing the glass near the surface to be subjected to a large compressive stress, and the core is pulled to the surrounding area and subjected to tensile stress. When the exterior is damaged, these residual stresses are quickly released, so that the crack instantly spreads throughout the whole and is fragmented, and according to the observation of high-speed photography technology, the transmission speed of the crack can reach about 1,400 meters to 1,900 meters per second.

These experiments of Rupert's tears are not only in factories, but also in technical schools or ordinary schools by physics teachers to demonstrate to students, the purpose of which is to stimulate the interest of students and workers in physics knowledge, you must know that since the Han Dynasty "deposed the hundred schools of thought and respected Confucianism" began the brain-dead policy, the world's scholars are no longer for the purpose of developing new technologies and improving the level of science and technology, but only know that they shake their heads like water birds and read dead books like drug addicts, and their thinking is rigid. The noble word of reading has become an effective tool to suppress the mind and imprison the development of science and technology. Thousands of years of Confucianism have corroded, and empty-handed scholars have occupied the high halls, only knowing how to attack each other every day with the great righteousness of the country, covering up their ugly crimes of corruption with flowery rhetoric, and numbing the toiling masses who are unable to receive education with high-sounding poems, poisoning the Chinese national system again and again. Especially during the years of foreign invasions, they borrowed Confucianism to anesthetize the enslaved people, disguised the massacre as salvation, and described the rampant conquest as a peaceful and prosperous era, so that the old world from which the patriarchs fled was still singing praises every day for some livestock with long braids dragging their heads behind their heads, and did not mind the atrocities of the three massacres in Jiading and even the slaughter of Sichuan in Yangzhou on the 10th day, and sang the praises of a Tunguska monkey king who traveled around in search of beautiful women and a group of harem concubines who were as ugly as wild boars in the mountains.

The patriarchs absolutely did not agree with this practice in the new world, the language is a very important thing, but it is not just that you can read and write to become an official, but you must have the correct three views and constantly inculcate politically correct ideas to the naturalized people. Therefore, from 1630 onwards, political courses were added to the education system of the Senate to establish the correct ideas of naturalized people from an early age. However, the education department does not pay more attention to the scores as in later generations, especially in the technical schools of the industrial sector, theoretical learning is important, but more important is hands-on ability and thinking development, with these, the industrial capacity of the Senate can be enlarged and expanded.

In fact, the tempered glass technology of the industrial committee is developed by a group of experienced naturalized technicians led by several young veterans, and in order to keep it secret, their current tempered glass factory is set up in the original Dongfanggang Glass Factory, and a new factory area is specially opened up for them as a tempering workshop. In recognition of these naturalized citizens, an additional twelve months' salary was given to each of them as a bonus, and the amount of these bonuses heavily stimulated the employees of other departments to start a large-scale technological development campaign outside of working hours - the senate has technology, the only thing lacking is the technical personnel to study these technologies, with these technical materials, as long as they are willing to develop and research, there is nothing that cannot be studied, but the patriarchs have tinkered with the machines to the sky, what else can't be done?

Of course, these turbulent storms under the seemingly calm Oriental Port can neither be seen nor understood by Zhou Jinfeng, he is a member of the Confucian culture after decades of corrosion, only know how to compose poems and write articles, to praise the emperor, he can come up with dozens of poems in a day, but he does not know anything about the almost completely sealed Rolls-Royce rickshaw sitting under his buttocks, he can only sit on the newly added seat cushion at the moment, thinking about how to negotiate with the people to send troops.

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Sun Keke is not cool, and he hates to make trouble

"What? What is he here for? Du Yande's eyes were round immediately, his mouth was wide open, and he looked at a naturalized secretary in front of him, his voice was so loud that Cao Xiang, who was sitting nearby, couldn't help but look up and look this way, not knowing what was going on.

"Chief, that Li Xijue said that he wanted to borrow troops from Dongfang Port." The secretary was obviously taken aback by Du Yande's appearance, and he didn't know if he had provoked the chief's backlash, so he hurriedly said timidly, "He also brought a document and asked me to give it to the chief." With that, she handed the document to Du Yande.

Du Yande took it, motioned for the secretary to leave, and then opened the document. "I'll go, it's really thick enough." Suddenly there was a voice next to him, Du Yande was startled and quickly turned his head to look, it turned out that it was Cao Xiang who didn't know when he was standing behind him. "When did you come? Walking without a sound? ”

"What sound can I walk with?" Cao Xiang said with a smile, "My current shoes are cotton shoes produced here, with six-layer cloth soles, and they are not wearing clogs, let alone high heels, of course they won't make a sound when walking." ”

The enemy side of the enemy side hates the moon and shows cool ghosts

"I'm not talking about you, I'm talking ......" Du Yande said this, paused, "Forget it, don't talk about this, I don't know what Li Xijue gave me this for." ”

"It's not for you, it's for the Senate," Cao Xiang said with a smile, "Didn't people say that they want to borrow troops from Dongfang Port, what is the use of asking us to borrow troops?" Are you planning to invade North Annam? ”

"Why do you want to fight North Annan?" Du Yande looked at the words on it while talking to himself, "If you want me to say that the words on it are too big, right?" You see. ”

There were six pieces of letter paper in the envelope, and there were small letters written densely on them, "The handwriting is very good, could it be that Li Xijue wrote it himself?" Cao Xiang slapped Du Yande directly on the back, "It's definitely not what he wrote, he's just a master, if it's such a major matter as borrowing troops, it must not be written by the master, at least the county order is written." Well? Why is the last font still different? ”

The two took a closer look at the inscription, the first few were written by Zhou Jinfeng, and the last one turned out to be "Huang Qiusheng". The name Huang Qiusheng is definitely not unfamiliar in the Senate, of course, this must be due to a Hong Kong movie star, but the actions of the governor of Annan in this time and space are also remembered by the senators of the Senate - he is thinking about returning Dongfang Port to the Wu Dynasty, which is a pipe dream.

The letter was no more than 1,000 words, but because it was a brush, the font could not be reduced, so six or seven pieces of letter paper were used, on which some recent movements of the imperial court were written, of course, mainly to say that the banditry in Shanxi had reached a very urgent level. Then the last one was proposed by Huang Qiusheng, and the governor of Annan Yamen guaranteed to the imperial court that the people of Dongfang Port are all loyal to the monarch and patriotic, and they are loyal to the monarch and patriotic. If the rebels in Shanxi can be pacified, the imperial court will definitely reward the generals for their meritorious deeds, and it is not a problem to be promoted to become rich, and the future is much brighter, far better than in a remote corner of Dongfang Port.

There is actually not much content in the whole letter, but Zhou Jinfeng, who wrote the letter, in order to show his foresight and insight, is familiar with poetry and books, and not only quotes scriptures and classics in it, but also uses a lot of very cold words, so Du Yande's head is dizzy, and he has to hold his mobile phone to read the letter while flipping it, and it took half an hour to translate this letter that is almost equivalent to a password.

"I'm dizzy, let's go to quell the rebellion, it's not good at all, what do you care about him?" Du Yande unconsciously threw away his bookbag and threw the letter on the table, "From here to Shanxi, more than 2,000 kilometers along the way, and we have to pass through so many cities, and our army, which is completely different from this time and space, does not belong to the Wu Dynasty, and we can't even solve the problem of food along the way." The road situation in the Wu Dynasty is so rubbish, not to mention relying on transportation to ensure logistics, even if you spend money to buy it locally, I am afraid that many cities have no food surplus, and most of them will starve to death on the road. ”

The enemy is far away, and the lonely ghost is hateful

"I don't think it's been too cold this year!" Cao Xiang said and pulled the woolen sweater on his body, Du Yande couldn't help but snort, and said with an angry expression, "Of course you're not cold, this is a genuine woolen sweater, and the tweed coat is also genuine, if you change to the kind of clothes full of chemical fiber products in the old world, you can try it?" Besides, we're in the tropics right now, and even during the Xiaoice Age, it's not much colder here. ”

"What's wrong?" Suddenly there was a sound of talking at the door, and the two looked up, it turned out that Xiao Mingwei and Tang Xunliang were standing at the door, Xiao Mingwei put his right hand on the door, and he was about to knock on the door. Seeing Du Yande look up, the two hurriedly made a standing posture and said in unison, "Report." ”

"Please come in, please come in!" Du Yande hurriedly stood up and walked over to invite the two into the office, Xiao Mingwei and Tang Xunliang sat down, both sitting on the wooden sofa with their waists straight, looking at Du Yande, making him uncomfortable for a while, and was about to speak, and Xiao Mingwei spoke first, "Report to the executive committee, our joint chiefs of staff have discussed and feel that we should send a force to the mainland to achieve the purpose of military training." ”

"Don't we already have troops on the mainland?" Cao Xiang said while making tea, "Hong Kong has a whole company of our Marine Corps and a detachment of the militia. ”

"They can't fight there, so they can only be stationed as garrison troops for a long time, and if they stay there for too long, it is likely that the troops will lose their fighting spirit," Tang Xunliang said quickly, "so the marines in Hong Kong need to be rotated every six months." This one...... Where we want to send troops this time......" he said with a slight hesitation, not knowing what to say.

Xiao Mingwei glanced at Tang Xunliang and took over loudly, "According to the information of the Army Intelligence Bureau, there is now a rebellious army called Monk Wang in Shaanxi with great strength, which has crossed the Yellow River and is developing towards Shanxi, so we want to send troops to Shanxi to participate in this battle to quell the chaos and increase the actual combat experience of large-scale operations to the troops." ”

The enemy is far from being alone

Du Yande and Cao Xiang couldn't help but glance at each other, they were both stunned, Cao Xiang poured too much boiling water from the hot water bottle in his hand, sprinkled a coffee table, and hurriedly looked for a rag, Du Yande walked to Xiao Mingwei and Tang Xunliang and sat down with some solemnity, and said solemnly, "I also just received a letter from Zhou Jinfeng from An Yuncheng, and I want to ask us to borrow troops to go to Shanxi to quell the rebellion." ”

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