Never look at the ancients through the eyes of a modern man!

This is Ding Yi's perception in the past three months.

When Wei Chigong rushed towards the cement wall with a one-foot-diameter log, Ding Qiba fell to the ground!

"Boom!"

"You lieutenant is old and black, you rush over and don't say a word!" Cheng Yanjin shouted angrily on the side.

Old black, no! Wei Chigong had already thrown down the log at this time, returned to Li Er's side, pointed to the wall that was not damaged in the slightest, and said, "Your Majesty, this concrete wall is indeed strong!" If this is the earthen wall, it was broken by the minister just now! ”

"Well, this cement is really strong!" Li Er replied.

"Your Majesty, why don't you push a siege engine!" Qin Qiong proposed.

After a while, someone came pushing the siege engine, and six soldiers pushed the siege vehicle and crashed into the city wall!

"Boom!" I saw that the wall did not move at all, and the logs on the siege trucks were flattened because they were about to hit the city gates!

Continue to increase the size, ten soldiers push and collide together!

It's okay!

Two siege engines, thirty soldiers!

Nothing!

If you want to continue, Li Er stopped it!

"No need to try! Indeed, the walls of concrete are strong! ”

Ding Yi replied: "Your Majesty, this is just the simplest, if you add iron bars to it when pouring, half of the thickness can almost achieve this effect!" ”

Cheng Biting Jin patted Ding Yi on the shoulder and said, "Haha! You kid can still make something like this! It's a great use! I heard that this cement is easy to fire, but is it true? ”

"Uncles, this cement is fired from stones, and fifty people can burn thousands of catties every day! It can be mixed with sand and stone to pave roads and build city walls! It can be mixed with fine sand as a binder, instead of glutinous rice milk! It's just that one thing is not easy to preserve, and you can't see water. Ding Yi returned.

Li Er said imaginatively: "With this cement, why can't I afford to build a high wall on the border of the Tang Dynasty, and why bother with foreign enemies!" ”

"Yes! Your Majesty! This cement is simple to make, raw materials are available everywhere, and most of the cost can be left! And this cement can be solidified in only three days, which is several times better than glutinous rice milk! The eldest grandson Wuji added.

At this time, it was time for Du Ruhui to come on the stage and said, "Your Majesty, the minister went to Shiping a few days ago. Shiping Hou has asked people to use this cement to build a road from his mansion to Shiping County, the road surface is smooth and spacious, and the whole road is like a complete bluestone paving. With this cement, then my Datang's transportation problem has also been solved! ”

"Haha! Keming said yes! Ding Yi, you have made a great contribution again! Li Er didn't know how many times he had praised Ding Yi during this time, no one had ever had such a thing!

"It's just what a minister should do!"

"You kid, you're still humble! Ha ha! Li Er scolded with a smile.

The others also looked at Ding Yi with a smile, this hairy boy is good! It's much better than those things at home!

followed Li Er and the others back to the Lizheng Palace, everyone sat on the Jindun, and Ding Yi was pulled to his side by Cheng Yanjin.

"Ding Yi, the potatoes before, the cement this time! How do you say I should reward you? Li Er said helplessly.

"Your Majesty, there was no shortage of salt before!" Fang Xuanling suddenly reminded Li Er.

Li Er's eyes widened, and he said, "I forgot, you kid said before that you can solve the problem of salt shortage, but is it true?" ”

When several generals in the hall heard this, they looked at Ding Yi in surprise, this kid ...... Gee! It's a pity that the old man doesn't have a daughter!

"Uh...... This ......"

"Say whatever you want! For cement's sake, I won't blame you! "It's a kid in the end, it really can't be solved!

Ding Yi thought for a while and said, "Your Majesty, the minister has a way!" ”

Li Er was excited, and the ministers were also excited. This kid really has a way!

"What's the solution?" Several people hurriedly asked this.

Ding Yi asked Li Er for a few people and went to prepare things!

After a while, a fire was burning in the main hall, and the brine salt was crushed. Stir with water and pass it through with a burlap several times. After using two layers of linen wrapped in charcoal grains in the middle a few times, I saw that the cyan solution flowed out.

The fire was so big that the solution was poured into the iron pot and kept burning.

Ding beat his waist together, a little tired!

"Boy, is that all right?" Cheng Yanjin asked. Is it that easy to make salt?

"When the water is boiled dry, it's salt!" Ding Yi explained to everyone. This is not the edible salt of later generations, but the current process has done a good job of doing this.

Li Er trembled again, so with water and a little bit, with a cloth and charcoal a few times, there will be salt!

"This makes salt?"

Ding Yi didn't answer him, and when the water boiled dry, a large piece of salt with some cyan in the iron pot was there.

Ding Yi stepped forward and buckled his nails and tasted it, damn! It's so salty!

Everyone looked at Ding Yi, whose face changed, and was startled, thinking that he had been poisoned.

"Ding boy, are you okay?" Cheng Yanjin asked eagerly.

Ding Yi found water and rinsed his mouth, and said, "Ah! Salty to death! I don't want to eat salt these days! ”

Everyone's faces were strange, and they also reacted!

"Haha! You monkey! It's really time to fight, but I think you're poisoned! ”

"Hahaha, salt...... That's it? Li Er was a little incredulous.

The others also looked excited, and they all hurriedly stepped forward to buckle their nails and stuffed them into their mouths!

Well! That's the smell! A pound of this kind of color is hundreds of liters, and ordinary people are useless. Just use a vinegar cloth and put it in to cook when cooking!

Ha ha! A group of men cried and laughed, giving this Lizheng Hall a strange smell.

"Your Majesty, this is actually the chemistry that the minister said! This is just one of the apps that isn't too difficult! ”

"Oh? This way of chemistry is so magical! Looks like I'm thinking it's simple! ”

"Yes, Your Majesty! The ministers also didn't expect that this way of chemistry would be so practical! Shiping Hou is talented! The eldest grandson Wuji and the others also sighed with Li Er.

Waiting for everyone to sigh, Ding Yi listened quietly. Until Li Er looked at him, he said, "Your Majesty, in fact, there is something I want to ask you to promise!" ”

Li Er looked at Ding Yi with appreciative eyes and said, "You say!" ”

"The minister wants a salt mine! It doesn't need to be too big! ”

Li Er glanced at Ding Yi strangely and said, "I'm right, but what do you want the salt mine for?" "This kid always has some weird ideas, and they can all come true in the end, and I don't know what he's going to do this time when he wants a salt mine!

Ding Yi also knew that this brine salt was made, and the salt mines in the country were estimated to be in the hands of Li Er, after all, this was the lifeblood! He wanted to make alkali, baking soda, soap...... There are so many things that need this brine mine! Halogen salt = stone alkali = condensate = medicinal herbs! It's an industrial base!

"Your Majesty, it's better to wait for the ministers to test it out, and then report it to you, now it's just an idea!"

"So, just do it! We have your full support! ”

…………