Qin Lang thought about it in his heart, it seemed that the future Emperor Gaozong, Li Zhi, should be born. It was probably Changsun who was worried about his pickled vegetables.

"Brother Qin, we're polite. It's mainly because it's hot, and my mother is pregnant again and has a bad appetite. The pickled vegetables that Xiao Wang brought over last time were quite easy to eat. Unfortunately, I'm too little, so I'm here to trouble Brother Qin again. These are enough. Thank you Brother Qin." Li Ke explained.

"Oh, that's good. If you have any other needs, please don't be polite. Just say, boy, please prepare." Qin Erhuo felt that he would be able to get the flattery in one go.

"No need for anything else. Brother Qin arranges someone for Xiao Wang to clean up some food and take a break. I will rush back to Chang'an." If I don't have time to be polite, Li Ke made a request directly.

I told the kitchen that there were freshly prepared meat sauce and sauce noodles, which were arranged for Li Ke and the guards.

Suck it, a meal of mutton noodles made Li Ke very comfortable, and he remembered the breakfast he had last time. The chef of Qin's mansion had extraordinary skills.

"Brother Qin, do a favor, just give your cook to Xiao Wang." Li Ke was still infected with the bad habits of the royal family. Whenever he saw good things, he would pull them into his house.

You can't blame this problem!

"Your Majesty, I'm sorry to obey you. You have to know that the chef is just a servant who has never seen the world and does not understand the rules of the palace. Giving it to the king may cause trouble. If the king wants this skill of pickling vegetables, he can send the chef in the palace to come over. The boy promises to let the chef in the mansion teach you without reservation. As for how much you can learn, it depends on the person you sent, which is so good." Qin Lang responded to Li Ke's request. His cook knew some of his own affairs and did not dare to put him in the palace.

Li Ke thought for a while, "Okay, that's it. When Xiao Wang comes back, he will send someone to come, thank you Brother Qin."

Li Kefeng left again in a hurry. Not only did he take away a few tanks of pickled vegetables, but Qin Lang also loaded a few cars of new furniture, so Li Ke took it back. The Royal advertisement cannot be wasted.

Qin Lang planned to complete the house and incorporate the Dazhou and others. They are technical workers and skilled technicians, just talents, and they cannot be let go if they encounter them.

Thinking of the craftsman, Qin Lang remembered his eldest disciple again. Why didn’t he reply to the task he had assigned to the eldest disciple?

Every day, I walked around and inspected the construction site of my own village, Qin Lang found a problem. When I took the craftsmen to compare the things they made, they seemed to have deviations. When I found their measurement tools, they actually started with inch. No wonder.

The Tang Dynasty's inch is probably about three centimeters in modern times, so it would be strange if there is no deviation.

The larger the unit of measurement, the greater the deviation! To develop industrial technology, more refined units of measurement must appear.

He grabbed Jiang Hao, threw the ruler and scraper on his flint to him, and asked him to use iron to make a one-meter-long iron ruler.

Of course, the starting unit is centimeters and millimeters are the smallest unit.

Jiang Hao couldn't understand the numbers above, so Qin Erhuo ignored them directly and could not explain them. He was just a picture, just do it.

It's been a few days, why is there no movement?

I miss Cao Cao, Cao Cao is here!

Jiang Hao came and brought a few rice rulers and his own flint ruler spatula.

"Young master, I have made a few things, so I can only do this for the time being." Jiang Hao handed over the thing.

After taking the hand, Qin Lang picked it up and looked at it. He was a little surprised. The two-centimeter-wide cooked iron rice ruler was straight. What made Qin Lang most happy was that the iron ruler was hit very thinly, only about two millimeters, which was rare.

"Haozi, did you do this yourself? Or did the old man help?" Qin Lang asked while observing.

Jiang Hao was a little embarrassed, "It's me, young master, Aye has no time to make a blacksmith now. Someone comes to find Aye to cut his hair, and he has no time to make a blacksmith."

"Hahahahahaha, okay, the old man did it well." Qin Lang couldn't help laughing. Old Jiangtou seemed to have made him turn the corner, and from a blacksmith to a barber, Qin Lang was a little happy. As long as he worked hard, he still had some results.

Comparing the scales, a few meter rulers and a large scale of centimeters, there is basically no deviation, and the millimeters are still somewhat deviation. It’s good. Qin Lang is very happy that pure handmade can be made like this!

"Haozi, leave this handful, refer to this more precise handful, and then think about it and make a few more handfuls. You use these waste rulers to compare them on the back and mark the number of inches." Qin Lang thought of the comparison and conversion of centimeters and inches, so he simply used waste, carved the inches and centimeters and gave them to craftsmen for use. Gradually, craftsmen will discover the benefits of this ruler.

Craftsmen, especially some masters, are already a little diligent. Once they embark on the path of craftsmen, they always keep honing their skills in order to get more wages and get more food.

"Okay, young master." Jiang Hao took the iron ruler and was about to leave.

"Wait, Haozi, last time I told you that I have nothing to do, and I have to learn to read when I have time. Have you done it?" Qin Lang cherished this good seedling of engineer and told Jiang Hao to find time to learn some knowledge. An illiterate person has too much limitations and it is difficult to achieve great success in the future. Such a skillful seedling cannot be wasted.

"After studying, the young man, the young man found Master Zhao and asked him to teach the young man to read." Jiang Hao replied shyly.

"Come on, sit down, a man should be generous and thick-skinned. How can he be so shy? How can you be like a little lady? Haozi, whether your ancestral grave can produce smoke depends entirely on you. Whether the old man can be noble in front of others depends on you. Don't waste your talents. Come on, I am optimistic about you." Qin Lang instructed Jiang Hao again.

"I remember, young master." Jiang Hao, who was sitting upright on the chair with half of his butt, replied seriously.

"You must be especially hard-working and serious in mathematics. It will be beneficial to you in the future and use it very much. If you don't understand, you can ask me any time."

"Yes, young master."

"Go, go busy, remember what I said." Qin Lang waved his hand and sent Jiang Hao away.

Jiang Hao left with a bow.

Qin Lang felt that the effect of letting him stock up was pretty good, and he was a little satisfied.

I took a one-meter-long iron ruler and the thickness was hit very evenly. The surface was polished. Unfortunately, there was no stainless steel material and it could not be rust-proof. However, this kid was not stupid and actually applied grease. It seemed to be animal oil, so he had done his best!

The millimeter scale seems to be chopped with something, even and fine, a good seedling, and skillful.

The first rice ruler with centimeters as the scale in the Tang Dynasty was a pity that it was too short, just one meter long. Due to the materials and technology, it was too difficult to make it longer!
Chapter completed!