Because of the decision to use mechanized equipment, Li Chengqian felt that his plan seemed to be unable to be carried out on time.

But this did not affect the preliminary preparations, on the one hand, they continued to do their own planning, and on the other hand, people began to assign tasks in various places, as well as the number of people who needed to be recruited.

These tasks can be carried out in advance, and there is no need to assemble after the recruitment, just wait at home, and someone will be notified when they will start working.

As for the mechanical side, Li Yuanjing had no choice but to send an order to the steam engine workshop in Haizhou to concentrate manpower and build 100 units as quickly as possible and send them back.

Cheng Chuliang also started to get busy, the machines are ready-made, even if there is no steam engine, they can build it first, and then just install the steam engine directly.

A year ago, the cement workshop was expanded, and after the year, it was given the task of Li Chengqian, so it began to expand on a large scale, and the training or something was carried out on the job, anyway, the existing people have been working for a few years, so it may be a little difficult for them to explain the whole process clearly, but there is no problem in teaching people their own responsibilities.

Then there is the sand and gravel workshop, which is also busy, and the sand, the stones, the lime, these are all things that need to be used in large quantities.

Of course, there are also carpenters, who need to make molds out of wooden boards according to the specified specifications.

After this year, the whole Datang seems to be busy.

A hundred small steam engines is not a difficult task at all for a steam engine workshop.

The technical difficulty does not exist at all, for the steam engine workshop with nearly 2,000 people, it is nothing more than to concentrate manpower for seven or eight days, and then transfer some of the elite to take the apprentices to assemble and work, and the rest of the people still do the problems they are currently tackling.

Now these people have some experience in the study of steam engines, but there are still many problems.

One of the biggest problems is how to judge the pressure in the furnace, and experienced masters can naturally see a rough idea, but they can't expect everyone to be masters.

According to the experience of the first steam engine ship, they judged the pressure in the furnace according to the size of the flame after ignition, and how long the ship could be started.

There is naturally no mistake in this judgment, but you can only make a preliminary judgment, or even no judgment, just study a few times and observe the law, and then directly tell them how long it will take to burn and start the boat.

But this is not very helpful for warships, which are used for combat, and the sea situation is extremely complex, and it is necessary to increase or weaken the power from time to time, and even need to reverse thrust when necessary.

Therefore, the requirements for the pressure in the furnace are relatively high, and the instrument is undoubtedly the simplest and most direct way to observe, but there is no technology.

Because Li Yuanjing reminded that when the pressure in the furnace is too high, there may even be an explosion.

Therefore, on the first steam-engine ship, it is usually deflated at regular intervals or directly injected with cold water for temperature-controlled decompression.

But these are only temporary measures, and there is no hard and fast rule, no one knows what to do and when, so they do it by depressurizing every quarter of an hour, so that no one knows what the pressure of the boiler is, but they have to do it for safety, and they can only sacrifice part of the performance.

Li Yuanjing is also very concerned about this problem, but there is no solution, or there is a way, but there is no technology.

It's like knowing that an airplane needs a fuselage and engines and various control systems to get into the sky, but I don't know anything other than that, and it's an unsolvable problem.

Time is slowly passing, in the middle of March of the eighth year of Zhenguan, Li Chengqian officially submitted the plan to build the road, this is an irreversible fact, although the final plan is only submitted now, but many preparations began years ago.

This plan is a plan that has been debated and revised by countless people, Li Shimin read it carefully, and found that although it was a lot of trouble to formulate, it seemed to be clear at a glance, and he controlled all the information in his heart.

Therefore, Li Chengqian's plan was directly approved, and Li Chengqian was appointed to be mainly responsible for the construction of this official road, and it was planned to invest 2.3 million yuan to complete the construction of this road before winter, that is, in less than six months.

In the past, this was definitely a fantasy, but in the face of this plan, it seems that everything is not difficult.

Most of this budget was spent on materials and equipment and compensation for demolition, and for this reason, the imperial court deliberately opened a section account in Qianzhuang and listed it as a special fund.

Of course, it was gold and silver from the imperial court reserves, and this investment had nothing to do with the treasury, although it was still money from the treasury on the surface.

At the same time, the first batch of five sets of 20 machines was also delivered, and in the next month, the remaining 15 sets of 80 machines will be delivered.

After Li Shimin approved the plan, the entire line from Chang'an to Tongguan became busy, and the four counties along the way began to gather the people recruited in advance, and under the leadership of the officials of the Ministry of Industry, they began to drive piles on the predetermined route and pay compensation to clean up the places that needed to be demolished.

At the beginning of April, all the preparations were completed, and it was time for the machinery to enter the site and start work.

Of course, before this, Li Yang and others had already started to build bridges, and building bridges was not paving, and it was not so easy, and they needed a longer construction period.

Every bridge on the way was designed by Li Yang himself, and even some places still needed to be drained, but it would be too much of a waste of time, and it would not be finished before the end of the year.

Therefore, after Li Chengqian learned of the situation, he simply waved his hand and directly changed his route.

There is no need to change too much, just build a bridge and reroute next to the need to reroute, directly transfer the excavator to start digging the river, and carry out river hardening while repairing the bridge to achieve the protection of the bridge piers.

At the end of April, Li Yuanjing, who was bored, decided to go to Haizhou.

But this time it's no longer him alone, it's the family that has migrated.

According to Li Yuanjing's thoughts, there is a high probability that he will not return to Chang'an in the future, and when there is a result in Haizhou, he will go to sea to the Americas, and then to the fiefdom, which may take three or five years or even longer, but it is not a matter for Haizhou Chang'an to run back and forth.

In addition, with the little guy, Li Yuanjing didn't want to go to Haizhou alone and not see her.

Of course, there are also Pei Yingying and Wang Xiaoyi's full of resentment.

The palace was instantly busy, this time the entire palace moved the family, and only a small part of the family was left behind, and the valuable things were taken away, and those that could not be taken away were sold, anyway, the scene was very lively, which made people sigh.