Emperor Shi Zai Hongzhi and Empress Zhang were married for four years, and they have not been able to give birth to a prince.

As a result, Zhu Houzhao came out, without any warning in advance, and soon after, "Zheng Wang's gossip" broke out.

According to records, Zheng Wangnai was a Jingwei military household, and he had to sell his daughter because of his poor family.

As a result, I heard that his daughter had entered the palace, and it happened that he had a friend who was on an errand in the palace.

Zheng Wang was excited, and actually went to the horse's house to climb relatives, and was soon captured by Jinyiwei, and the eunuch Liu Shan was also arrested for spreading rumors.

Emperor Hongzhi personally tried this case, and the eunuch who spread the rumors was beheaded, but Zheng Wang's life was saved.

This matter is well known to everyone, but the ministers are not easy to say, after all, it involves royal privacy and the crown prince.

Poor Zhu Houzhao, everyone in the capital speculated that his mother was the palace maid named Zheng Jinhua, not Queen Zhang.

And it seems to be true, because Emperor Hongzhi not only protected Zheng Wang, but also the palace maid surnamed Zheng.

It wasn't until after Zhu Houzhao ascended the throne that Empress Zhang, who was promoted to the queen mother, cut down this Zheng Wang.

Since then, Zhu Houzhao has not seen the Empress Dowager Zhang for ten years, and has never asked the Empress Dowager Zhang to say goodbye again.

When Zhu Houzhao died young, Empress Dowager Zhang did not show any sadness.

I have to say that Emperor Hongzhi is too lenient, and the father and son are still being subdued by Empress Zhang, if there are a few more concubines, I am afraid that there will be no such strange things.

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Meaux, Red House.

When the Ming royal family staged court ethics, Yan Zheng was approving the report of Guangdong.

He was very satisfied with the work in Guangdong, and wished that those mountain people would come to Dongqin.

At the same time, he also received a letter urging Liu Shiyang, although his words were very humble, he was still expressing his dissatisfaction.

It was as if every time the Eastern Qin brought back a group of people, they had to deliver some ordnance.

Yan Zheng readily approved, first of all, to let the task force continue to go deeper, and secondly, to inform Liu Shiyang that the second batch of ordnance would be on the road immediately.

He thinks this kind of transaction is worth it, anyway, a batch of ordnance, he can sell it in fifty times!

In addition, after the rifling machine is put into production, the troops are stepping up their redressing, and when the expansion is completed and the ordnance is assembled, the table will have to be turned over if not over!

After the approval, he wrote a letter to the First Shipyard and sent a design drawing.

This design is a "paddle wheel" steamer, which is simply a pair of waterwheel-like things on either side of the boat.

In addition to this, the entire ship was designed for steam engines and coal, making it a ship that was specifically powered by it.

The only difference between this ship and its barge-like ship is that it has a chimney and paddle wheel, and incidentally the interior is also designed with a steam engine room, and the rest of the space is used to place coal.

I was going to make a propeller, but it turned out that the screw was still a high-tech, so I simply got on the paddle steamer, although it was a little behind, but it was able to ensure that there was no wind and went upstream.

"Lan Ya, send this drawing and letter to the shipyard urgently!"

Lan Ya nodded and continued, now the urgency is to use the horse. Although the cavalry has not yet been formed, through several transactions, Dongqin finally has more than 200 usable war horses.

A cavalry for communication has also been formed, and the work of setting up post stations has also begun, using the method of changing horses every hour to ensure the fastest marching speed. It can also make the post station a radiation point.

After Lan Ya came back to recover her life, Yan Zheng got up and went out to a newly built building.

This building is called the Chemistry Building, which is a bit far from Meoc, and a place near the river has been chosen.

The chemistry experiment was finally about to be carried out, and Yan Zheng was worried that these students would mess up, so he decided to give them some advice in the first class and personally go to them.

Although he was apprehensive in his heart, he also understood that these students engaged in chemical engineering would be one of the most indebted people in Huaxia.

The mere exposure to corrosive volatile substances and the damage to internal organs is enough to shorten the life expectancy of these students, not to mention the high risk of production.

It's just that a generation has a generation's things to do, and we can't think of everything as the ability and wisdom of future generations to solve it.

After coming to the door of the chemical building, Wang Erhu and Yang Si were already waiting, Yang Si was originally an intern in a porcelain factory, and a suitable glaze was prepared in a month.

"Hello teacher!" The two said hello.

Yan Zheng smiled, thinking that their protective clothing was very funny.

When he entered, he also wore goggles made of leather and glass, protective clothing sewn from fish skin, gloves made of sheep casings, and masks filled with cotton and charcoal.

Although it seems a little clumsy, it can be regarded as a protective force.

Yan Zheng felt very uncomfortable just after wearing it and walking a few steps, and when he walked into the laboratory, he felt a burst of coolness!

The bucket filled with saltpeter soaked water made the temperature lower than the outside, and a few deep holes were drilled, which also made it possible to replace some cool air.

The students of the chemistry group bowed and saluted, Yan Zheng waved his hand and said: "We have talked a lot about theoretical things, and now that the experimental equipment is complete, we should also move towards practice!" In the next few years, whether the chemical industry can usher in great development determines whether our country's productivity can be further improved! ”

"Today we are trying to produce soda ash in three acids and two alkalis, which is what we know as sodium carbonate. If soda ash can be produced in large quantities, it will greatly improve the glass industry, and it will be used as a detergent, buffer, neutralizer and melting agent, in short, it is extremely important for our life and industry! ”

The students all nodded solemnly, and watched Yan Zheng introduce various test utensils and test steps.

The method used by Yan Zheng is called Yan's alkali method, which is copied from Lu Blan's alkali method.

Under his direction, some of the students heated the salts in a glass dish until there was no more moisture in them.

Then limestone and charcoal are added to the crucible in proportion to be fired at medium and high temperatures.

In this process, some irritating gases are also produced, mainly sulfur dioxide, but there is no value for collection because there are too many impurities.

All the students watched with wide eyes, probably to warn them of danger, so they formed a semicircle and blocked Yan Zheng.

This made Yan Zheng feel ashamed, although he wanted to be tough, but he still retreated for the sake of the country.

After the refining is completed, it is to use a grinding dish to slowly mash and grind the generated substance, and then put it in water to stir and dissolve, and after it is still, it can filter out impurities and bitter brine, wait until a clearer solution, and then evaporate to obtain soda ash.

The test itself is less dangerous, but if the utensils are unreliable, it is easy to have an accident, although there is no worry about life, but if it is broken, it is also extremely bad.

After the soda ash came out, Yan Zheng asked them to test it again, and when they found out that it was really soda ash, everyone was happy and relieved.

The process is not difficult, the difficulty is to turn the experiment into a production step, the soil method can be used to make alkali from Malubran, but the situation of large pollution, low purity and instability also exists.

So the experiment itself is to let the students know the reaction steps and then see if they can improve it.

"Now that the test is over, if soda ash is produced according to this method, what do you think is the biggest problem?"

"We can't produce miscanthus salt!" Wang Erhu was the first to answer.

Yan Zheng nodded and said: "This is indeed a problem, but it is not the biggest problem, although we can't produce it, but this thing is available in the Wa Kingdom, the Ming Kingdom, and even the Ryukyus, so the supply is diverse, and the neck is not stuck!"

"When it comes to large-scale production, it can't be reacted in one step, so even if it is a factory, these steps are separated." Yang Si asked.

Yan Zheng smiled and agreed: "That's right, we can't do it in one step!" However, it can only be said that it is cumbersome, and it cannot be said that it is the biggest problem. ”

The rest of the students thought about it, they could think of the problem, but they couldn't think of the biggest problem.

Yan Zheng let them think for a while, and then said leisurely: "Can't you think of it?" The biggest problem is that Dongqin is so hot, and the factory is even hotter, and the leather we wear is the biggest problem! Do you want workers to work in the scorching heat every day? After all, it's safe! If any of you can come up with a safer solution, even if it is a major innovation and breakthrough! ”

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