As the cold snap went south, Yang Li built a fireplace inside the fortress, and for some evil purpose, he only built it in the hall and in his bedroom.

Because a chimney goes straight up and down, it just so happens that the location of the fireplace is suitable for building in that location, Mao Mei seems to have nothing to say about this, but she is clamoring to build another one in her room, but Yang Li took out the castle design drawing, and the blind base poked it indiscriminately, saying that once you change the structure of that room, the entire city defense system will be destroyed.

When the time came, they sent a few monkeys to attack the city, and our hometown was demolished.

Mao Mei blinked and said Okay, try to spend this winter in your room.

Yang Li was very happy, and was about to eat her for nothing, but there was a knock on the door, and as soon as the girl came in, he was dumbfounded.

Xiao Zhen Mi also jumped and ran over, the two beauties wrapped in animal skins, squatted in front of the fireplace and stretched out their hands, letting the orange flame warm their palms and bodies, chatting happily over and over again, only leaving the leader of Yang aside.

Although it looks eye-catching, the family style is not right.

Yang Li hesitated again and again, but decided to let Mao Mei go, after all, Lori is here, and there are things that are not easy for it to do.

"Zhen Mi, come and study." Yang Li opened the notebook and beckoned to Lori.

Zhen Mi was reluctant, but she still rubbed over in small steps and lay in front of the screen.

Yang Jiao doesn't have any major events these days, the cavalry training is small, the new village in the delta is slowly under construction, and the Chongduhe Mining City is still prospecting for sites, and so on everything has achieved remarkable results, how to count it will be next summer.

As for winter...... In this era, there is no need to squeeze the bus to go to work on a snowy day, and there is no need to go in and out of the mountains and forests in the wet and cold rain.

So teaching the children, plus running to the city walls in the afternoon to bask in the sun, has become the main fun at the moment.

Zhen Mi has finished learning ninety-nine multiplication, but there is no deeper math course next, according to the current level of productivity, there is no need for complex geometry and algebra, so the problems given to her are mostly addition, subtraction, multiplication and division problems, such as an acre of land yields half a ton, which is not in place due to insect eating and irrigation, and the loss is 8%, so what is the final harvest of ten acres of land.

At present, the uncle in charge of the treasury still has to rely on knotted rope calculations, although he is rigorous and reliable, but the ancient algorithm is not efficient after all, Yang Li decided to use Zhen Mi first as an accountant to call, anyway, no one will sue him for using child labor.

Of course, such a strong accountant is probably the best in the world.

Because Lori is often followed by a tiger, except for Yulia and Yang Li, almost no one dares to approach her within ten steps, just kidding, this eye-catching white-fronted insect has become more and more fierce recently, four meters long, coming and going like the wind, ten sharp claws like a short sword, catching a bison is a pounce, then pressed to the ground, tore the throat and bit to death.

But this tiger is not recognized by others, so it is recognized by Zhen Mi, Lori usually wants to eat some game to satisfy her hunger, it is all caught by it, it is simply a reasonable pet.

Yang Li said that you are doing well, when you kill the black blood clan next year, you will go to the north to help you take a look, and you should be able to find a tigress to come back.

The so-called house has a house, in addition to teaching Lori, Yang Li also fulfilled the glorious mission of a technical house.

Engage in invention.

In fact, it's not an invention, it's nothing more than plagiarism like other traversers, but the leader of Yang never admits that he wants to plagiarize, because that's called borrowing, if we copy others better, then it will become original, not only copy, but also let you charge money, without money you can't even play what you copied.

Luocheng was established along the river, and the craftsmen brought by the Xuanyuan clan had begun to launch the wooden boats, so the wharf was naturally an indispensable building, and Yang Li had to make use of the river next.

The use of water power will be reflected in two aspects.

The first is to build a wharf. Build more boats, let your craftsmen master and digest Xuanyuan's technology, build more advanced and perfect wooden boats, and open up the upper and lower reaches of the Luohe River - in ancient times, there were no highways, and water transportation was much faster than land in terms of cost and time.

The second is to build waterwheels. Millet is now ground into powder by a rudimentary stone mill that uses manpower to better preserve or make other food, but it is less efficient, so the emergence of the water mill will save the civilization a lot of labor costs.

Two things, the wharf was built in the front, and the waterwheel was built in the back, but both needed to prepare wood, so Yang Jiao specially organized a logging team of 70 people, plus an armed escort team, a total of 80 people, to go to the nearby woods to cut wood.

The felled trees were cut into chunks on the spot, placed on ox carts and transported back to Los Angeles for further processing, some into logs, others into planks, all piled up on the shore.

Why do you have to build a dock, can't you just let the ship go into the water?

Modern people who are accustomed to seeing urban rivers may not understand that rivers are like urban canals, with vertical walls and roads on both banks, but in fact, this is an environment that has been transformed by humans.

In most natural rivers, there will be a slope from the bank to the center of the river, which means that the water on the river side may be shallow, so the boat with a deeper draft will go down, and the problem will arise, it will not be able to dock on some banks, because it will run aground as soon as it docks.

The role of the wharf is mainly to facilitate the docking of ships, loading and unloading of goods, as well as the distribution of personnel, among which the convenience of docking is the most important function, through the wooden planks that extend to the center of the river on the shore, directly build a road between the ships in the deep water area and the river bank, and the ships can transport the people or things on the ship to the shore without running aground, and the port that plays this function is the most primitive wharf.

Generally speaking, the upstream and downstream of the alluvial bank is washed by the current all the year round, and the bank wall is steep and the water depth is considerable, so it has become an excellent location for building a wharf.

Therefore, the site of the wharf is located in the north of Yang Li's self-retained farmland, as for why it is not south, because last time Dugucheng planned to divert water to irrigate the city in the north, which shocked Yang Li, although the city defense system will be improved to build a moat to avoid this situation, but before that, it is necessary to prevent it.

So what does the city defense have to do with the wharf, because the first wharf must be dual-use, not only to take into account the communication with the mountain territories on the opposite bank, but also to take into account the trade with the upstream and downstream tribes, so it is inevitable to build arrow towers and arrange garrisons, so the wharf has become a small fortress.

Since there is a garrison in this position, it will naturally be more difficult for the attacker to achieve the purpose of destroying the city by digging up water and flooding the city.

Of course, the attacker can choose to take the dock first. In response to this offensive, different urban defense systems appeared in later generations, for example, there was a way to directly incorporate the dock into the city limits; There was also a more militarized type, which was to build a wall between the dock and the fortress, on which troops could be marched, so as to ensure that the fortress and the military port echoed, and that troops could be withdrawn or sent at any time.

When Yang Li led people to build the wharf, the people in Los Angeles came to watch again, it was really amazing, there were crowds, men, women and children stretched their necks to look this way, as if the workers who erected the stakes and nailed the planks had become stars.

However, there are too many people, but it affects the transportation of timber, so Yang Li decided to drive everyone away, but this is not tight, they all protested, in late autumn, the farm has stopped, in addition to sleeping at home wife and children, what else can you do, you can also gather people here to entertain it, you actually want us to go, I don't want to.

Yang Jiao persuaded well, everyone just said yes, and then dispersed a little, and gathered again after a while.

"It's really no wonder that the leader of this is ruthless." Yang Jiao was about to instruct the guards to expel the civilians, but suddenly there was a shout.

"It's coming, it's coming, the ox cart is coming!" The crowd parted ways, and another ox cart with timber arrived.

"Unload." The workers shouted.

"Together, together." The onlookers swarmed up.

"It's okay to move down, right?"

"Do you see the pile over there, the flat ground that has been cleared!"

Yang Li was dumbfounded, he didn't plan to gather so many people, this time the workers who built the dock didn't have any more budget except for their own slaves and some free people who paid for food.

But now in this scene, hundreds of people are not paid, and they actually join the army of construction workers because they are bored, which is really completely unexpected.

It is no wonder that some experts in later generations have studied that the Great Pyramid was not built by illegal old enslaved civilians, but that everyone loved him and built a tomb for him in their spare time.

Ahh

Yang Li hurriedly arranged manpower and assigned work to everyone, if you want to do the work, we don't force you to go, in short, the work efficiency of building the wharf in the past few days is definitely very high.