Zhuangzi is still building, and Zhang De will keep an eye on the progress of the project every day. Now neither the old emperor nor the emperor had any intention of looking for him to continue to do big projects, also because there were other things that attracted them.

Taking advantage of the cold spring situation, it is the right thing to quickly add bricks and tiles to your own territory.

"As a teacher in Hebei, when crossing the river, I saw a bridge, which was built by Li Chun, a former Sui craftsman." There was a small river near Zhuangzi, and Zhang De found a shop with flat banks and a thick riverbed, and prepared to build a stone arch bridge.

At this time, Zhaozhou Bridge was not famous, and the people who heard about it were also going around in Hebei. The Sui Dynasty is indeed a dynasty with intensive large projects, Lao Zhang walked around Henan and Hebei, not to mention the series of canals around the Grand Canal, just say that this stone arch bridge, in addition to the domineering and mighty Zhaozhou Bridge, there are hundreds of large and small stone bridges, each with its own design concept and technical practice.

Of course, the most domineering is still the Zhaozhou Bridge, with a single arch, but the span is so large.

"This bridge is a stone bridge, spanning both banks, and there are as many as 56,000 stones. The large stone is more than 20 stones, more than 1,000 stones, and the small ones are not counted. ”

Listening to Zhang De's description, the bear children, who already had the basic concept of weight, were all surprised, and couldn't imagine how such a heavy stone bridge was built.

But there was something even more surprising to the bear children.

"The stone bridge ticket crosses the river about 12 zhang, and the height is 2 zhang. The bridge deck is measured by the division, about 20 zhang long and 3 zhang wide. ”

Sure enough, the bears were shocked.

They couldn't help but be shocked, they didn't even weigh a hundred catties, but they already understood that in this world, there were hundreds of thousands of catties of stones, just connecting the two sides of a river.

"Okay, what we have to do today is how to calculate the arc of the Jiaohe Stone Bridge Coupon."

Today, it's another geometry class.

A while ago, because of Lao Zhang's fanfare of "continuing to learn for the sake of the saints", the people of Chang'an were excited, and at the same time, there were a lot more people in Pingkangfang to buy drunk and scold their mothers. Of course, the spearhead is pointed at one person, and there is no doubt that he is not daring to face the challenge of Jishi Talents, Liangfeng County man Zhang De and Zhang Caozhi.

In these years, those who play mathematics are actually engaged in the construction of classic quotations, is there still a heavenly principle? Is there still a royal law? Has anyone else come out to take care of it?

However, although Lao Zhang's pigtails are many, not everyone can catch them, it's easy.

And the most important thing is that although Lao Zhang doesn't understand economics, in the Tang Dynasty, Zhenguan was only able to hold money by relying on technical means, advanced knowledge and golden thighs, but this does not prevent him from becoming a very rich and convincing successful person in Zhenguan for eight years. Abbreviation: Eight Fine.

Then the financial magazines he scattered everywhere were actually nothing more than a chicken soup book filled with chicken soup.

For example, among them: Liu's family in Dengzhou, Henan, the family road is down, and the goods are sold in Fusang by boat, which is rich.

Just talking about commercial trading can only attract the hard work, and it is not enough to be powerful.

Therefore, there must be other cases: Hebei Cangzhou Gong Gao Zhao's, boating far away Liuqiu, get coral, three zhang four inches high, Liuqiu Tuwang is happy, with pearls ten pots of gold thousand taels as a gift.

Chicken soup doesn't have to be bragging, and chicken soup doesn't have to be a. The point of the chicken soup article is that it uses the story to make you feel as if you are inspired by your side, and then pour a mouthful of chicken soup into your heart, which is cool!

As an engineering dog, Lao Zhang wanted to die when he smelled chicken soup, but this did not prevent Lao Zhang from taking chicken soup to pour it to others. In fact, Zhang De is not good at compiling the chicken soup canon, but as the so-called has never eaten pork and seen a pig run, as a "eight non-special" successful person, for most of the short frustrations and ugliness in this year, the male in Liangfeng County took off his pants in public, which is also a kind of chic and uninhibited.

Zhenguan's eight-year-old Zhang's chicken soup set was a big hit, which made Lao Zhang understand a truth, social science practitioners have natural advantages as leaders.

This hurt the engineering dog very much, but the engineering dog **** was traumatized, and enjoyed the greetings of a beautiful and gentle virtuous girl there every day, and bravely continued the great cause of chicken soup irrigation.

On a certain day when Hou Junji asked people to dig trenches every day and then shoot more than 20,000 arrows with one temptation, even the eunuchs of Taiji Palace who swept the floor were full of going to sea to make a fortune at the moment. A book without a profit is not a dream.

What came to my face was the feeling of "what are you waiting for, and I haven't picked up the ...... cleanly".

It's perfunctory to go to the unit every day, and the little friends and children of Guozi Jian Taixue are willing to learn, and it doesn't matter if they don't want to learn. Although they have been paddling, this does not prevent students who have started learning Tianzhu numbers from mastering the four operations in a short period of time.

At this point, Lao Zhang can already let many of his peers who are holding the calculation chips bite their lips......

At the same time, some students have been able to skillfully roll dice in the gambling house to calculate the probability, and some of Lao Zhang's peers are crying and fainting in the toilet.

Liaodong's military department Shangshu fought unhurriedly, and still tried to call over more than 20,000 arrows once a day. If he could, Hou Junji could keep shooting 100,000 arrows a day, and he could shoot for more than half a month in one go.

So many barbarians from the grassland and forest tribes originally wanted to ridicule Tang Jun for being too coercive. It wasn't until they saw that the gameplay of the Bingbu Shangshu was different from what they had said before, so they saw the arrows shooting all the time every day, and it felt like they had shot to their knees.

The positions of the counterweight trebuchets, advancing with the advance of the trenches and the camps. Whenever the cavalry of Goguryeo wants to come out to play a wave of death, the cavalry here in the Shangshu of the Tang Dynasty Military Department will also come out to play.

Unlike the Goguryeo cavalry, the cavalry of the Tang Dynasty has a unique term to describe it - armored cavalry.

Stone City Iron and Steel Plant, a wise choice.

Although Lao Zhang wanted to know what the next plan of Hou Shangshu was, for the sake of the manufacturing of Xiaobawang's learning machine, Liangfeng County had to continue to carry forward the spirit of hard and simple struggle.

Then more than 5,000 sets of the "Monopoly" Tang Dynasty version were sold in the Chang'an area, and now Guozijian is popular with this, at least more popular than Go.

"Get out! Get out of the old man—"

In addition to the anger of Kong Saijiu, there is nothing to do. He really wanted to scold Jiangnan Turtle Sun for being vicious, Guozi Jian Xin Xin student, you are a dignified Liangfeng County man, you are embarrassed to ruin the spirit of youth and decadence? If it weren't for the fact that there were no electric chairs in the Tang Dynasty, Kong Festival wine would definitely be used for the first time.

Lao Zhang was very ashamed, but if he thought about it carefully, the Tang Dynasty version of "Monopoly" was similar to giving Contra thirty lives, he should not feel guilty, he should be happy and proud. In the future, I built a Xiaobawang learning machine, and the final purpose is not also to ...... For the sake of learning!

Thinking of this, engineering dog, he is proud. (To be continued.) )