Bai Erwa stared at the cement slab, was stunned for a while, and then said slowly: "Your Highness said that this board can bear two thousand catties!" Now it's two thousand catties, I don't know if the iron ingot will break if I put it again! ”

After hesitating for a while, Bai Erwa motioned for someone to put another ten yuan, that is, one hundred catties.

As a result, after another twenty pieces went up, the slate was still the same, and there was no movement.

Will breaking this stone slab make His Royal Highness King Qin unhappy? This is already beyond the limit of His Royal Highness's weight, although there are still three hundred catties of iron ingots, but Bai Erwa is really hesitant.

Li Chun, who was standing on the side, didn't dare to speak.

After looking at the monitor for a while, Li Yuanxing saw the problem, the load-bearing was not tested in this way. According to the arrangement ordered by Bai Erwa, more than 30% of the weight in it was not borne by the board, but dispersed to the pillars. This is testing the stone platforms on both sides, not the boards.

What's more, the neat and staggered placement will definitely disperse the pressure.

If it is only 2,000 catties in the center of the slate, it must have been broken.

Thinking of this, Li Yuanxing picked up the walkie-talkie at hand: "Erwa, get close to Li Chun, let Li Chun hear the voice of this king!" ”

The mere appearance of King Qin's voice was amazing enough.

Li Yuanxing said at this time: "Li Chun, this king asks you." What is the difference between these 2,000 catties of iron ingots placed in this way and all of them in the middle position? ”

"Your Highness, it should be the principle of weighing the rod!" After Li Chun came back to his senses, he replied with his knowledge.

The Tang people don't know about leverage yet. But I know that the weighing at that time used the principle of leverage.

"The sinners dare to think that if they were all piled up in the middle, this slab might break!" Li Chun replied respectfully.

"Erwa, crush the slate. Let Li Chun take him to see the king after seeing the fracture! After Li Yuanxing finished speaking, he cut off the walkie-talkie.

Intercom!

This thing can be said to be a symbol of the special status of the guards of Qinwangzhuang, and there are only eleven in the entire Qinwangzhuang. Nine of them are in the hands of people with status in each guard, such as the front and back left and right four gates, a total of five are placed, of which two are the main gate. The general on duty was responsible for holding.

Then Bai Erwa, the old wolf, and the generals on duty in the left and right battalions each have one.

Li Yuanxing's study has a gatehouse, and Li Yuanxing has one in his hand. There is also one that cannot be moved. Similar to the function of the base station, it is placed in Li Yuanxing's study, and an antenna is also erected in the backyard of Li Yuanxing's study.

There is another walkie-talkie on his waist, but it is much more majestic than a famous knife.

Even the royal palace does not have a mythical call box. This thing is second only to Bai Erwa's rechargeable portable spotlight in the hearts of the guards.

The cement slab finally broke. Even the steel bars were stretched and broken.

Remove the iron ingots. Li Chun watched the tea at the broken point for a long time. He could already tell that the slate was supposed to be made artificially, but he didn't understand how it was made. The steel bar can increase the strength, and the same goes for the bamboo bar. Especially the hollow part. It is even more wonderful to use bamboo in a circle.

After Li Chun left, the broken cement slab was carried away. The cement slab will be crushed, and the steel bars inside will be taken out and returned to the furnace, which can be used to build other things.

"Your Highness!" Li Chun knelt on the ground again after entering the small reception room.

"Get up and speak, Qin Wangzhuang does not kneel down. You have the talent of a first-class master craftsman, but you have not made the contribution of a first-class master craftsman. Sit down here, and I'll talk to you! Li Yuanxing motioned for Yuanchun to pour himself tea.

And in front of Li Chun was a cup of goat's milk.

"Drink a glass of goat's milk, your body is too weak. Recuperate for a few days, this king needs you to really do something big! ”

Li Chun sat in the designated position, a pillar of light shot out from behind him, Li Chun's heart was already a little numb, it was rumored that the King of Qin of the Tang Dynasty was descended from the Star Monarch, and it was not surprising that Qin Wangzhuang had any magical things.

The pillar of light shining on the cloth was a picture.

A detailed drawing of the Zhaozhou Bridge after dismantling is the masterpiece of later generations of bridge engineers.

"It's a perfect bridge, one more is more, and one less is less. In particular, the two small arches can increase the strength of the bridge and reduce the weight of the bridge. It can save about half of the stone, and the reduced weight can increase the load-bearing capacity of the bridge. The arch is smaller than half a garden, and twenty-eight small arches are connected to form a large arch. This bridge has three uniques! ”

"Your Highness Xie praises." Li Chun stood up and saluted.

Li Yuanxing waved his hand and motioned for Li Chun to sit down: "The thing you saw just now is called a reinforced concrete prefabricated slab." It is made of steel bar, cement, sand and gravel, and water. ”

The diagram has changed again, it is a structural diagram of a reinforced concrete prefabricated slab.

"Well, you can look into it. But the king of cement can only give you 10,000 catties, at most 20,000 catties. And the steel bar is only 1,000 catties of stainless steel, and the fine iron nails can give you 10,000 catties. However, the bridge that the king wants you to build will only give you four months to build, and the bridge will be flat, and the bridge will be 500 steps long! ”

Li Chun was surprised, but not surprised.

This is a challenge, a challenge to bridge one's own life, and with such a bridge, there is no regret in dying.

As if he had guessed Li Chun's thoughts, Li Yuanxing said again: "If you are satisfied with only a five-hundred-step bridge, then you have disappointed this king." What this king wants in the end is, 1,800 steps, the Yellow River Bridge. If you want to engrave your name in stone after death, this king wants your name to be on the Yellow River Bridge! ”

Li Chun got up, sorted out his clothes very solemnly, and bowed.

Get up, straighten your clothes again, and bow again. Dress up again and kneel!

"Thousand steps stone bridge! To give you a reference, I imagine that you can do better! Li Yuanxing turned off the projector and put the two pictures on the table. One is a rendering of the Lugou Bridge, and the other is a design exploded view.

Li Chun has already seen this picture once, compared to him who is half crazy and who is calm now.

At this time, when he calmed down, he knew the value of this picture.

If there is no first-class master in Datang, then how does His Royal Highness King Qin evaluate these masterpieces. If it is said that the Tang Dynasty has a first-class master craftsman, then how to evaluate the masterpieces of His Royal Highness King Qin.

There are already a lot of rumors about Sun Shenxian.

Sun Shenxian has always refused to accept the badge of a first-class doctor, and the world thinks that Sun Shenxian is modest, this is courtesy.

There should be three refusals, and only then do you get the badge of a first-class physician.

But at this time, Li Chun seemed to understand Sun Laodao's thoughts, in front of His Royal Highness King Qin, you are qualified to get a first-class badge, not how high your jishu is and how strong your ability is, but what you have really done. When you do it, you can wear the first-class craftsman badge with peace of mind.

When Li Chun retired, Li Yuanxing said again: "Don't look down on yourself, and don't look down on yourself." A good bridge can save people many detours. It can make grain and goods arrive faster. Its contribution is far greater than the significance of a bridge itself, medicine is the way, and the craftsman is also the way! ”

Li Chun held the drawing high above his head, bowed and withdrew.

The bridge not only has to cross people, but also cannot affect the ability of river transportation, which is really a test.

Li Chun went crazy again, this time it was a normal madness, the arithmetic scribe asked for twenty, the servant who grinded ink and miscellaneous asked for four, and he applied for a car just for paper.

He wants to calculate, he needs to calculate in detail the magic of the Lugou Bridge.

And he also specially applied for four thousand-foot long ropes and six carriages.

Li Chun wanted to conduct an on-the-spot investigation.

Moreover, Li Chun had to personally shiyan cement once, and Li Yuanxing was also approved.

Du Ruhui came to see Li Yuanxing in person, he came for Li Chun.

"Your Highness, did you say that the bridgesmith is qualified to become a first-class master craftsman, just because of a bridge?"

"Du Gong, don't underestimate a bridge. Can Du Gong know the actual benefits of a good bridge? Li Yuanxing asked with a smile.

Du Ruhui pondered for a moment: "If it is really as His Highness said, a Yellow River bridge appears in Lanzhou, then the Tang army can go three thousand miles to the west, and there is no pressure on logistics at all." The benefits of the Silk Road will increase by one percent! ”

"Toll for crossing the bridge, and the cost of the bridge can be recovered in five years!"

Li Yuanxing's words that didn't matter at all made Du Ruhui know, and he only thought that Li Yuanxing was joking.

Li Yuanxing sighed lightly: "Actually, there is more than one bridge that this king wants, what if there is a bridge in Fenglingdu?" ”

Du Ruhui's mind flashed quickly through the map of the Tang Dynasty, the Yellow River is broken from north to south, and there is no bridge over the Yellow River since ancient times, all by boat.

Occasionally, when the current is gentle, there is a simple pontoon bridge, but there are days a year when the water is gentle.

If there is a bridge in Fenglingdu, the requirements are not too high, and there are 300 horse-drawn carriages per day.

Then Datang's development of Hebei Province will increase tenfold, hundredfold.

Hebei Province is now poor, poor, sparsely populated, and has no land.

"A giant bridge with a width of 20 zhang and a length of 800 zhang will bring Datang tens of thousands of dollars of wealth every year, and tens of millions of taxes from the national treasury. How much is Du Gong ready to contribute to this bridge? Li Yuanxing is putting pressure on Du Ruhui with the thinking of a modern person.

The plot is broken! It's definitely not for nothing.

"Your Highness thinks how many runs are needed?"

"Eight million times! It needs 100,000 catties of cement, countless sand and gravel, and millions of catties of stainless steel. It will take at least three to five years to build, and 200,000 craftsmen will be used. Li Yuanxing looked excited.

Judging from Li Yuanxing's expression, Li Yuanxing will definitely build this bridge, and the Jinghe Bridge should be a test for Li Chun.

Du Ruhui couldn't make a decision, he didn't dare to speak, eight million pounds didn't scare him, but a million catties of steel really scared him.

"Of course, you can also change the method, similar to the current Jinghe Bridge. But the Yellow River is different from the Jing River, what will happen if there is a big flood and the bridge is destroyed, then everything will be repaired in vain. To control the Yellow River, only by managing it can we ensure that the flood water is reduced, and even prepare a backup waterway and flood discharge area to protect the bridge. ”

Du Ruhui was completely blinded, and the amount of information Li Yuanxing said had exceeded his mental arithmetic ability. (To be continued......)

PS: There will be no updates in the next few days.

Tomorrow morning plane, four-day meeting.

Hope you don't get drunk!