There are three more children in the family, very lively, every day from time to time single solo, two duet, three chorus, is a huge test for young mothers, fortunately, there are many people, so as not to be in a hurry.

If it's just a child, this is happiness, but since Feng Daiwen came back, a few concubines without children appeared in front of him every day with different tricks under the instruction of Guang'an, whether they wanted children, or simply wanted to be a little more pampered, anyway, there were people who kept shushing the cold and asking for warmth, serving tea and water, just like there was no maid at home, and life was also a variety of supplements, the reason was that he was injured, but it was obviously a knife wound, blood loss, and there were sheep kidneys every day, what the hell is the deer whip.

Within a few days, Feng Daiwen couldn't stand it, so he had to start hiding, either hiding in the study or going out to live in the scientific research institute.

Although I couldn't figure out the monetary system, there was no problem in designing a few beautiful gold coins and silver coins, so I found Yan Liben and made one tael, five taels, and ten taels of gold coins with the heads of Li Yuan, Li Shimin, and Changsun respectively.

And with Chang'an City, Lingyan Pavilion, martyrs' cemetery image to make silver coins, the use of the steam engine huge power stamping production, the back of a circle of pattern with the image, the front is Zhenguan year number, one tael, five taels of font.

The gold and silver coins made this time are all sufficient currency, and the people who can use gold and silver are all rich and noble, so it is naturally very good to distinguish coins, which is also the reason why there is no hurry to make copper coins, after all, the people are too literate and can only be distinguished from the size.

Using stamping production, not only are all exactly the same, but also the patterns and fonts are extremely clear, and the same is true for several people's avatars, which can be described as well-made.

As for how to operate, I still put forward the method I know and let the old fox of the court think about it, but the state-run money bank should start to be set up, although this will offend many nobles, but will I be afraid? Of course not.

By the imperial court, anything will become easy, Gaonu stone paint will soon be transported to Chang'an in wooden barrels, Gaonu stone paint is Yanzhou, located on the side of the Yellow River, after mining out of barrels, along the Yellow River to Chang'an, it is also convenient.

Feng Daiwen set aside a small place in the scientific research institute to store and refine oil, not only isolated from the surroundings, but also strictly forbidden fireworks, all soldiers are not allowed to use wooden sticks, iron tools, leather armor, and even craftsmen can only wear cotton and linen to prevent open flames and static electricity.

Fortunately, Feng Daiwen doesn't need to explain why, the people below naturally follow, this is the benefit of power, and it is no wonder that countless people have been fascinated by it throughout the ages.

Sealed large distillation made of bricks, condensation of multiple layers of copper pipes, several different oils can be obtained.

"The smell of this fierce fire oil is so strong!" Li Chunfeng walked to Feng Daiwen, who was busy commanding, and said.

"That's right, that's the smell!" Feng Daiwen smelled the smell of gasoline and said with great satisfaction.

As he spoke, he asked people to pour gasoline into the pit, then stood far away, lit a torch and threw it over.

"Boom!" Flames erupted violently from the pit.

"Wow!" The guards next to him were all taken aback by such a fierce fire, you must know that the fierce fire oil used today is all animal and vegetable oil, boiled when defending the city, and poured down the siege equipment, one to burn the enemy, and the other can then drop the torch to burn the siege equipment.

The oil burned naturally very violently, which surprised everyone, "Splash water!" Feng Daiwen ordered.

The guards, who had already received orders and were ready, dressed in cotton clothes, soaked with water, smashed the clay pot containing water from a distance.

"Boom! Rumble! An even more intense fire erupted, causing the guards who had thrown the jars to retreat in fright.

After waiting for a while, without new fuel support, it was extinguished, and several people walked to the side of the blackened pit and looked down.

Not only was the tunnel blackened and hot, but the earth was also showing signs of melting.

"What a fire!" Li Chunfeng shook his head and said.

"Of course, it is powerful, nothing else, it can still burn on the surface of the water, and extinguishing a fire with water is like adding fuel to a fire, and there is no sediment to extinguish." Feng Daiwen explained with a smile.

"Master Hou, let's try a few other oils!" Li Chunfeng couldn't wait.

After experimenting with the last few people, what was left was basically diesel, kerosene, and a viscous liquid that could be used as lubrication.

The oil evaporates easily, so it has to be packed in clay pots, stored in wooden boxes on the outside, and straw in the middle to prevent collisions.

The oil is refined, and at present, the pomade oil is used in the steam engine, the effect is much better than that of vegetable oil, it is not used for lighting, except for a little taste, it is more durable than candle burning, and the cost is also a lot lower, which can be said to be good quality and low price.

The dead wind lamp is made of glass, and the wick is made of cotton, which is not only easy to carry, but also not easy to cause fire, and the candle can be used by ordinary people, with kerosene lamp, it can not only be used for lighting at night, but also can be lit up all night in many places, such as city gates, night markets, and can also be used as street lamps.

"There are many effects of this kind of stone paint, which requires everyone to continue to explore, and the lubricating oil can also be subdivided and optimized, and we must also try to add other materials to find the mystery." Feng Daiwen admonished.

"The lower officials will arrange for interested people to continue to explore in depth and try their best to find more uses." Li Chunfeng obviously doesn't have much interest in this black ointment, and still loves the machine more, but as the best lubricant at present, he cares more.

Fortunately, there are people in the scientific research institute who like to play with various liquids, and they don't have to worry about finding people to continue their research.

The advent of oil, submitted for use, is also an important progress, although now it can only be used for lighting, military, and the remaining residues are used to pave roads, but as long as someone continues to explore, there will always be more and greater uses.

The emergence and application of the steam engine, coupled with oil, and gunpowder in Li Shimin's hands, completely possessed the foundation of industrialization, and the only thing lacking was talent, which could only be cultivated slowly.

…………

"This is made of stone paint?" Li Shimin looked at the glass kerosene lamp placed in front of him and asked.

"Back to my father, it's true, after refining the stone paint, you can get fifty percent of the oil, and the rest is also the best material for paving, which is more durable than the cement pavement and the cost is much lower." Feng Daiwen nodded and said.

"Since it is a good thing, it will be passed on to the imperial court, and others are not allowed to mine it privately." Good things naturally need to be owned by themselves, but fortunately, stone paint is useless in the eyes of people nowadays, and the smell is quite heavy, it belongs to the kind of wasteland that no one wants, so it is not too troublesome.

"My father is wise, and my son suggested that a refining workshop be set up in Yanzhou, so that it is convenient to manage production." Feng Daiwen complimented, and then proposed.

(End of chapter)