Yu Wenlin came quickly and left quickly, but when he left, he still took away some of the books and materials that Li Kexin took out, which were all about the knowledge of ship construction, as well as the knowledge of navigation, which could only be handed over to Yu Wenlin.

The two ships that have been built will cooperate with some of the original ships of Datang to start sea trial training on the sea, mainly to exercise at night and during the day to rely on the compass, sextant and other positioning, and the nautical chart is naturally given, these are all copies.

Some of these crews were trained by Yuelai Commercial Bank, while the other part was supplemented by the current navy of Datang.

The order was naturally given by Li Shimin, Datang has a navy, although there is no navy in this period, but Datang has been training the navy, when the Tang Dynasty fought with Goguryeo, the Datang navy attacked many times, and achieved very good results.

So this time, Li Shimin also transferred a general of the navy to Li Ke's caravan.

However, Yu Wenlin came over and brought Li Ke a good news, Li Ke is not clear about the progress of Yu Wenlin's side, mainly because the dock for construction and research is a little far away from Chang'an, and Li Ke cannot pay attention to the progress at any time.

Now I have received good news, at present, Yu Wenlin has not only researched and built two sea ships, but also trained a lot of shipbuilders, which is very important.

However, this time Li Ke has mobilized most of the resources of Yuelai Commercial Bank, first of all, if he builds a shipyard near the Bohai Sea, most of the ships of Yuelai Commercial Bank will be used to transport timber from all over the Tang Dynasty.

And it's not just wood, because to build an ironworks near Youzhou, in fact, the best is naturally Tangshan in the later generations, but that place is still the territory of Goguryeo, and it can't be taken back for the time being, but Luzhong and Handan also have it, but for the time being, it's a little far, Handan can be, because Handan is close to the Grand Canal, which is convenient for transportation.

It is also possible to establish it directly in Handan, and some of the large components developed also need to be transported over, and it is impossible to produce another set locally, and the craftsmen here have already gained experience, and it is not easy to produce locally.

Fortunately, there are canals near Chang'an, and although these parts are heavy, they are not so heavy that they cannot be transported.

After arranging the construction of the sea ship, Li Ke also had to arrange the production work, the armor Li Ke pondered for a long time, it must be impossible to use the improved steel armor used by the soldiers now, but it must be ironarmed.

If it's the production of Mingguang armor, it's not that it can't be produced, the main thing is that it's too straightforward.

After thinking about it, Li Ke called Duan Lun and Yan Lide over.

At present, Yan Lide is a master craftsman in the Tang Dynasty, and he is responsible for the construction of Li Yuan's mausoleum in the ninth year of Zhenguan.

"I've seen His Royal Highness the King of Qin." When Duan Lun came over, his eyes were still a little dark, obviously he had been tired enough recently, and the things that Li Ke explained were too much, and it was not easy for the Ministry of Industry.

However, Li Ke has no idea of correcting it, because many of Datang's efficiency is actually very low, but this low is not because of objective reasons, but because they often have overlapping functions, plus they don't know how to be flexible, so they will become very tired.

In fact, they did at least three to four percent of their work repeatedly.

But he won't correct it, these jobs are for various departments, so that they can find their own problems in their work when they are busy, if they don't know how to be flexible, how to improve the efficiency of various departments in Datang?

Laziness is the driving force of human progress.

They want to be lazy, so they will be motivated to find ways to improve and improve efficiency.

"Excuse me, that's the case, how many drawings does your Ministry of Engineering have for armor? Leave aside the Bright Light Armor. Li Ke asked.

"Is it the iron armor that Your Highness wants to ask?" Duan Lun was a little puzzled.

"Yes, iron armor, the protective area is about the same as the Mingguang armor." Li Ke asked.

"There are two more, but after our research, we found that they are not as easy to use as Mingguang armor, and the other types are a little worse." Duan Lun immediately introduced.

"Well, I see, so you can have someone send the patterns of these two armors, and I'll take a look." Li Ke thought for a while and said.

"Yes!" Duan Lun immediately agreed.

"How many craftsmen are there in the Ministry of Industry for forging armor and agricultural tools?" Li Ke asked again.

"If it's just craftsmen, it's about 300 people. The auxiliaries are all recruited from the surrounding people, or from the people who serve in conscription. Duan Lun introduced Li Ke.

Li Ke was slightly stunned, the small number of craftsmen in this area of the Ministry of Industry made Li Ke a little surprised, but if you think about it carefully, it is not so surprising, these are the main craftsmen after all, followed by the iron ore mine of Datang Because it is private, there are private iron mines such as the Changsun family in charge of iron ore forging.

Naturally, the number of craftsmen in the Ministry of Industry is not so large, and if you make armor, you are responsible for polishing the armor and other work, so there is no problem in using the common people who serve as slaves.

Li Ke frowned, to be honest, the role of the Ministry of Industry is far lower than Li Ke thought, especially under the premise of Li Ke's current recruitment-based work, the role of the Ministry of Industry has been greatly reduced.

Only in the areas of dredging for flood control, digging canals, building roads, etc., can there be a certain degree of organizational ability.

Other than that, the advantages of other engineering departments are not so great.

In fact, there are not many large-scale projects in Datang, mainly the construction of buildings, dredging of rivers, construction of flood control dams and other large-scale projects.

Of course, the Ministry of Industry is not only responsible for these projects, for example, the most important work in the fields is also in charge of the Ministry of Industry. Therefore, at present, the craftsmen and other aspects of the Ministry of Industry are really not the main tasks.

But in this case, Li Ke pondered whether to split the Ministry of Industry, and split the Ministry of Industry into the Ministry of Construction and the Ministry of Agriculture? Because there will inevitably be more and more construction work behind Datang, with the current understanding of the Ministry of Industry, or the current efficiency of the Ministry of Industry, it is simply impossible to accept a task of this scale.

"Duan Lun." Li Ke thought for a while.

"The minister is here."

"The efficiency of your Ministry of Industry is too slow, I am very dissatisfied, but before Wei Guogong said that you can't force you, I didn't say much, but if the efficiency of your Ministry of Industry is still so slow, I will split the functions of the Ministry of Industry." Li Ke said.

Duan Lun: "......"

Your Highness, do you see my current state? Look at my eyes, look at my tired look...... Am I not trying?