After turning his eyes back to Chang'an, Cheng Yaojin and the other three followed Dugu Yufeng to Li Chengqian's "Lanruo Temple", they saw Li Chengqian painting, and there were many scattered papers placed next to the table.

Several people looked at Li Chengqian's "painting". After a while, Cheng Yaojin asked, "Boy, what are you painting? It's ugly than a chicken pad."

Li Chengqian looked up at everyone, nodded to Qin Qiong to show his tricks, then pointed to the picture he drew with the brush in his hand and said, "This is called a hydraulic stamping machine, a very useful machine."

"Hydraulic stamping machine? That's it?" Cheng Yaojin also pointed at the drawing drawn by Li Chengqian.

I saw that the picture... is uneven, vertical and vertical, and countless circles. If Li Chengqian didn't say that this was a drawing, anyone would treat it as a naughty child.

Li Chengqian looked slightly embarrassed and said in a slight sense of reason: "This is a schematic diagram. Do you understand the schematic diagram? It's possible, probably, almost the same, maybe. Oh, anyway, as long as Lao Liu can understand it."

Liu Min wanted to say that she couldn't understand either, but under Li Chengqian's stare, she could only nod and admit against her will that she could understand.

"What is the use of this thing?" Qin Qiong knew that Li Chengqian never did useless work, and as long as it was something he took out, it would definitely be of great use.

This can be proved by a series of ordnances that have significantly improved its power after transformation, such as pulley bows, pulley bed crossbows, and steel pulley crossbows.

"Uncle Qin, please see, a big wheel here is the cylinder car we are using now. It drives the middle axle to rotate under the push of water. Then it changes the speed through the gears here... and then to the ratchet here... Finally, you can lift an iron ingot weighing 50,000 kilograms here." Li Chengqian put the 'schematic diagram' upright, pointed at it with his hand, briefly introducing the working principle of the Tang Dynasty version of the turbine.

After talking about a cup of tea, Li Chengqian was dry and his mouth was dry, Cheng Yaojin and Qin Qiong were dizzy when they heard it. Only Liu Min seemed to have gained something, constantly scratching his head, and comparing with both hands.

After hearing that Li Chengqian wanted to lift the 50,000 kilograms of iron ingots to a height of five feet through the power of water, Cheng Yaojin, who was confused, turned a pair of bull eyes and said contemptuously: "Boy, are you idle and have nothing to do? Why are you carrying a 50,000 kilograms of iron ingots for nothing? Are you full?"

Li Chengqian also rolled his eyes to Lao Cheng, such as "ignorant bandit", and looked at Liu Min and said, "Lao Liu, do you know the thing that is minted by money?"

"Go back to your highness, I know." Liu Min nodded. Although he didn't know what Li Chengqian was selling, this did not mean that he could not answer the question.

"So what do you think would happen if we found a three-mm steel plate, smashed it with this 50,000 kilogram iron ingot, and turned it into an arc?" Li Chengqian said, while gesturing in front of his body with his hands.

"Armor? Are you talking about steel armor?" Qin Qiong was not calm. As a general of war, the first impression in his mind was armor when Li Chengqian gestured.

"Yes, I named this Plate Armor, which is stamped by a complete piece of steel plate, and different parts are stamped with different molds, such as breastplate, armplate, wrist armor, etc. Finally, these parts can be connected with rivets."

Li Chengqian became more and more excited as he spoke. As a "can" control, thinking about those "tin cans" would appear in his hands more than 700 years in advance, he almost felt excited about wanting to infiltrate his diabetes.

Qin Qiong and Cheng Yaojing were also very excited. In their opinion, the "tin canned food" mentioned by Li Chengqian was simply the best equipment for equipping Mo Daobing.

My whole body was wrapped in iron sheets, and I let the enemy cut the axe and cut it. I remained unmoved. I just waited for the time to come and waved the sword in my hand. For a moment, the people and horses were broken and flesh and blood flew everywhere.

The two old kids began to emit blood in their eyes, licking their lips gently like a bloodthirsty demon, staring at Liu Min tightly: "Sir, tell me, can this thing be tinkered with?"

Liu Min frowned and said, "It should be no problem, it's just..."

"Hey, I don't like talking to you like this. If you can, it's okay, it's not okay. What's the matter with a sluggish belly?" Cheng Yaoxian was impatient. When Liu Min whined, the old guy immediately complained.

"Lao Liu means there is not enough steel." Li Chengqian couldn't stand Cheng Yaojin bullying honest people and took over the conversation.

Cheng Yaojin glared at his eyes, regardless of whether it was reasonable or not, and shouted: "If you don't have it, just practice it. Isn't there a new steelmaking method?"

Li Chengqian looked at Cheng Laohuo helplessly for a long time, and finally said angrily: "The iron ore in Chang'an is transported from other places, and the total amount is only a little, so what's the refining?"

This time it was Cheng Yaojin's turn to stop saying a word. Li Chengqian was right. He didn't even have the raw materials and was nothing more than just making a fuss.

The Tang Dynasty now used preliminary folk refining, refining iron ore into pig ore ore, which was then purchased by the government and transported to Chang'an or some other workshops that needed iron smelting.

Therefore, raw materials are a big problem. Although the crucible is used to make steel quickly and iron ore is used, due to transportation issues, raw materials still cannot keep up with consumption.

Cheng Yaojin has been in charge of the prison for this period, and he knows the situation that the steelmaking workshop will stop working and wait for materials from time to time. Now when Li Chengqian said that the old man can't say anything against it.

Just as Li Chengqian and others scratched their heads, Qin Qiong squeezed the armrests of chairs: "Make a sample first. If it is as the Prince's Highness said to make the defense effect, I personally go to ask Your Majesty for instructions. It is better to mobilize the government army than to ensure the supply of raw materials."

"In this way, Chengqian thanked Uncle Qin." Someone went to the old man and said that it was naturally better than going to him, so Li Chengqian gave Lao Qin a very serious gift.

At this point, it can basically come to an end. Cheng Yaojin didn't wait for others to speak, but directly changed the topic and said to Li Chengqian: "Boy, the matter has been finished. I will remember to make this girl's clothes look like Xiao Si's figure tomorrow."

"What clothes? This is the Prince's East Palace..." Li Chengqian blinked his eyes and looked at Dugu Yufeng, wondering where Old Cheng was going to be crazy.

"What is the East Palace or the East Palace? It's just a set of clothes." Cheng Yaojin didn't listen to Li Chengqian's explanation at all, and said carelessly: "You little girl likes it, so you, a brother, should have a set of clothes."

Li Chengqian nodded helplessly, knowing that Lao Cheng is famous for not being easy to pass. If he doesn't agree, maybe this old man can do something, and maybe he will kidnap the tailor of his prince's East Palace.
Chapter completed!