In a few minutes, Sun Xiangfu rode a bicycle on the cement road around the village in Xingfu Village, which was not as light as the bicycles of later generations, but due to the large steel rim of the tires, the speed was not slow.

"Brother Dali, come to the back seat, I'll take you around and try it." Stopping the car, Sun Xiangfu stood on his toes.

"Can this car still pull people?"

Sun Dali looked at a long wooden board on the back seat, with his current fat figure, he could actually sit down, although he was a little skeptical, but he still tentatively wanted to sit on it.

"You sit with your body wide and sit apart, and there are two feet under you, and you step on one on each side, and your hand grasps the iron ring above the cushion."

Sun Xiangfu still remembers that when he was a child, his father rode his own car and took his mother to go to relatives with him, at that time, no family had a car or motorcycle, bicycle, it was one of the three major pieces of marriage, with it, it was convenient for a family to travel.

In order to make the car more suitable for carrying people, Sun Xiangfu's original design drawing, on the design of the back seat of a cushion, there is an iron ring of the gripper in front of the seat cushion, Sun Dali wears trousers, can be split to sit, many wear skirts, or robes, you have to sit sideways, as long as a bamboo chair is installed on the tripod, you can sit for children, with a smooth cement road in Guanzhong, a man who can ride a bicycle, with two people, can ride out twenty or thirty miles in an hour, and the speed of the horse is not slow.

Soon, Sun Dali sat on the back seat of the bicycle according to what Sun Xiangfu said, he weighed more than 160, Sun Xiangfu was a little struggling at the start, but he was on the road soon, and the speed of riding was not slow.

"This car can really pull people, and besides, it is not slower than a horse, but it is a good thing."

"Of course, we have a good road in Guanzhong, as long as every family is equipped with such a car, the whole traffic will live, from the happy village for an hour, you can go to the county seat, two hours, almost to Chang'an, I will teach you first, you go back and teach everyone how to ride ······"

It was still about time, Sun Xiangfu carried Sun Dali around Happy Village, and then began to support him in the back and teach Sun Dali to ride a bicycle.

People who have just learned to ride like to look at the crutches under their feet, the strength of the dragon head is unstable, and they will panic when they want to turn, these problems Sun Dali has, however, after learning for more than an hour, Sun Xiangfu can almost leave him alone, adults have legs to support the ground, when he panics, just hold a few times, after practicing for an hour, he can basically ride by himself, and he only needs to be more skilled in the back, there is no problem.

As for the tricycle, it is a steering problem that is not easy to solve, you only need to learn to steer on the wheel as the axis on the faucet, in fact, it is better to ride than a two-wheeled bicycle, Sun Xiangfu pulled six people in the tow compartment at one time, and rode twice around the happy village, everyone knows the power of this tricycle.

Its load is no less than that of oxen and carriages, and even, when pulling relatively light things, it has a slight advantage in speed, and the physical strength of an adult man, stepping on it, can pull hundreds of pounds of things dozens of miles away.

"Master, can we manufacture this bicycle and tricycle in large quantities?" Marseille said with some excitement.

The starting point of his question is very simple, to help the surrounding villagers save a sum of money for renting a horse-drawn carriage, so that some people who come to the village every day to pick up goods with flat poles can save time and energy.

"Not yet, the cost is too high, the people can't afford it, you have to continue to study how to reduce the cost, and when the big smelter in Weinan begins to produce steel next year, the cost price will be lowered, and then you can almost make some for sale."

Sun Xiangfu only needs to visually inspect the steel structure of the vehicle and the solid tires made of fish gelatin, and he knows that the cost of this car in terms of materials alone is as high as dozens of runs, and things like fish gelatin, if you want to get a large number of them, it is not so easy, and this is not counting the wages of workers to make these things, so at present, it can only be regarded as a concept car.

"I've just thought about it, if all the parts are made into molds for production, and then assembled, it can save a lot of work, as long as the iron we smelt can reach the hardness of direct application······

"Well, you have a good idea, continue your research on this path, and, besides, aren't you working on alloys? There are some alloys that can make steel tougher, but the weight will increase, and there are some alloys that can make steel lighter, as long as the hardness is enough, it is enough to make a bicycle, you have to reduce its cost, but also consider it more convenient, lighter, more comfortable. ”

"Well, with direction, I know what to do." Marseille replied with a confident nod.

The site of Xingfu Village is too small, only suitable for research, and the large smelter in Weinan can give full play to the technology they have researched, so after Sun Xiangfu saw the axle, he had some confidence in the new tank, and then calculated the manufacturing cost of a tank.

The cost of a crossbow chariot is more than 200 guan, the bed crossbow chariot and catapult are nearly 300 guan, if you get 10,000 yuan, the cost of the chariot alone is nearly 3 million guan, plus 60,000 horses and horse kai, 40,000 pairs of wrestler heavy armor, and the arrows and stone bullets used in the chariot, if all are complete, it is estimated to be more than 8 million guan.

Seeing this figure, Sun Xiangfu had a headache, and the military expenditure for building 10,000 new combat vehicles directly almost used up all the military expenses in the original plan.

However, in order to reduce the number of dead on the battlefield, Sun Xiangfu wants to promote the entire armament upgrade, then, except for the chariot troops, if all the rest of the armies are upgraded, the military expenditure of this Eastern Crusade may reach more than 20 million.

"Do it! It's only 20 million. ”

After thinking about it for a long time, Sun Xiangfu finally made a decision, and then began to continue to study with the craftsmen how to make more standard ordnance in a faster and easier way.

The lathe of the arrow shaft and the gun shaft, only need to place the wood, shake the handle, it can be sharpened straight and round, the size is exactly the same, than the original speed and quality of the manual cutting of the supervisor, I don't know how many grades, a lathe, a person, less than an hour, can make a bundle of arrow shafts, or dozens of gun barrels out.

After the press of the steel helmet is made, you only need to put the iron embryo on it, pull the buckle, and let the pestle of thousands of catties poke it down, and a round steel helmet will come out, and you only need to put the rope in the two holes left on the iron embryo, so that it can be firmly worn on the head, and it also has a function, which can be used as an iron pot to cook porridge and eat.

In fact, Sun Xiangfu, who has seen the helmet on the construction site in the later generations, also wants to add a shock-absorbing device to the steel helmet, because there is no plastic or anything like that, it is a little troublesome to get it, and when the time comes, he will directly make a cotton and fur liner in the hat, so that he can wear a helmet in winter and be warm.

Just relying on a few such lathes in Xingfu Village, you can complete the production of many equipment, and after these lathes are mass-manufactured, Datang will manufacture similar weapons and equipment in the future, and the time and cost will be reduced several times.

The process of R&D and creation is extremely slow, and Sun Xiangfu stayed in Xingfu Village for more than ten days before returning to Chang'an.

At this time, it was already nearly October, and Shanyang's all-army competition had already ended, and the first battle report finally came from the east.

Su Dingfang was fortunate not to be dishonored, led four divisions with a total of 50,000 cavalry, and even under Siping, Buyeo, Hailong, Kaiyuan and other more than ten cities, near the new city, and the return of the Goguryeo Yuan Gai Suwen started a guerrilla war, he selected 3,000 elite cavalry in each of the four divisions, divided into four branches, and constantly harassed the Goguryeo army around, as for the large group of men and horses, it was to drive more than 100,000 Goguryeo people, has arrived in the territory of the Habubu, and soon, it will be received by the 20,000 light cavalry of the Anbei Army led by Abu Tusi, escorted to Shanyang.

And when Yuangai Suwen was about to break up the army and encircle and suppress Su Dingfang, the news came that Beisha City was attacked by the Tang Dynasty Naval Army.

However, another piece of news made him even more anxious, Li Shimin named Gao De, the son of Gao Jianwu, the king of Rongliu, as the king of Goguryeo, Gao De had been on the table in Laizhou, declared himself a vassal to the Great Tang Natu, and got in touch with some people in Goguryeo who supported Gao's family, defined Yuangai Suwen as a rebel, organized tens of thousands of troops, and launched an attack on the area actually controlled by Yuangai Suwen.

As soon as this situation appeared, Yuangai Suwen could no longer care about entanglement with Su Dingfang, so after he set up a defense in Xincheng, he divided 20,000 troops to reinforce Beisha City, and led 70,000 troops to meet the army that supported Gao's family, but it allowed Su Dingfang to gain a foothold in the newly captured territory, and at the same time had time to let more light and strong men of the four divisions enter the occupied area and build a defensive line.

In Li Jing's view, the temporarily organized armies that supported the Gao clan would not be the opponent of Yuangai Suwen, and if they held the city and retreated while fighting, they would only be able to hold out for a few months at most, so he suggested that Li Shimin send a letter of state to Silla and Baekje, asking them to send troops to help the Gao clan quell the rebellion.

However, these two countries seem to have a tacit understanding with Yuangai Suwen and did not send troops, which made Li Shimin very unhappy, until he left for the way back to Chang'an, he shouted that he wanted to destroy these two disobedient small countries, of course, he also made preparations to prevent Yuangai Suwen from counterattacking, and ordered Li Daozong, who was stationed in Lulong, to divide 20,000 troops to support Su Dingfang in Kaiyuan.

Sun Xiangfu returned to Chang'an, naturally because Li Shimin had a new task for him, Fang Xuanling suggested that Li Shimin move those Goguryeo people with a high degree of sinicization to Guanzhong, cultivate the fields that were replaced by the family in the next step, and further assimilate them, and Li Shimin agreed.

Therefore, Sun Xiangfu now has another task, taking advantage of the autumn harvest, there are no new crops planted in the fields, and hurry up to hand over the fields that need to be replaced, before the Spring Festival, the more than 100,000 households, more than 300,000 Goguryeo people, will go to Guanzhong, if they can be settled down as soon as possible, then they will contribute to the output of Guanzhong next year.

Measuring the land, liquidating the number of acres, and the workload of the relocated people is very large, Sun Xiangfu directly interviewed the people of the major families in Chang'an, and asked them to leave their houses and necessary farming tools, and Sun Xiangfu can distribute the same amount of new farm tools to them in Tai'an New Town, provide them with housing land for free, and some materials for building houses.

This proposal was naturally approved by the major families, you know, it is very uneconomical to transport these things that are not very valuable to thousands of miles away, and the freight may be higher than its own value, so that they only need to take their subordinate farmers on the road lightly, and Sun Xiangfu does not have to worry about settling the upcoming Goguryeo people, and both sides have saved a lot of trouble.

However, after negotiating this matter, Lu Wenyuan and others turned the topic to the issue of the mine, Ma Zhou was preparing for the auction of the mine half a month ago, however, after Xiao Yu's decree went down, the magistrate near Guanzhong did not report the number of mines, which caused the auction to be delayed.

"Sun Dudu, most of the mines are in the deep mountains and old forests, occupied by some bandits and bandits, you want to rely on a decree, all these industries that were originally occupied by them back to the imperial court, it is obviously unrealistic, it is better to do this, the auction does not need to be held, I will wait for a few companies to pay to settle those cows, ghosts, snakes and gods, and then buy those mines from the imperial court at an appropriate price, only in this way can the imperial court's demand for various minerals be quickly solved."

Hearing Lu Wenyuan say this, Sun Xiangfu quickly understood what he meant, the pit of the auction, they didn't plan to jump anymore, they were so easy to talk about in front of it, it was also to pave the way for talking about this matter, and they used some disgraceful means to make trouble for Sun Xiangfu.