Zhang Nan walked in, only to find that Li Er was still dressed when he left. Dressed in white, he still has his coiling dragon sword in his hand.

Li Er saw Zhang Nan come in, picked up the teacup and took a sip of tea before saying, "Why are you here again, didn't I let you run that boat?" ”

After listening to Li Er's impatient question, Zhang Nan quietly rolled his eyes in his heart and said, "You and I are willing to come to you." But he honestly saluted Li Er and Empress Changsun.

"Your Majesty, the matter of this ship has been settled, and now as long as the emperor gives an order, then you can start building ships." Zhang Nan said.

"Oh? It's so fast, it's a bit unexpected by me, but didn't I say it, wouldn't it be good for you to go directly to Wei Tianwu to discuss this shipbuilding matter, if you don't have any money, go to your father-in-law. Li Er continued to drink tea, and he didn't even look at Zhang Nan.

Looking at Li Er's unhappy appearance, Zhang Nan felt that it was very likely that he had ruined Comrade Li Er's good deeds that would cause Comrade Li Er in front of him to be so unhappy.

"The problem lies in this shipbuilding, we can't build such a big ship in Chang'an City, so we can only go to those docks on the beach to build ships, and we need a large number of skilled craftsmen." Zhang Nan scratched his head and said.

"Can't build such a big ship? How so? What does he eat for Wei Tianwu? Li Er obviously didn't believe that the Ministry of Industry under his direct command dared to say such a thing as not being able to make it.

In Li Er's opinion, let alone one ship, it is a hundred, as long as he gives an order, the Ministry of Engineering must also build it for him.

Zhang Nan saw Li Er's irritable appearance here, and began to explain to Li Er. After explaining for a long time, Li Er finally understood the reason.

"You mean to say that you are going to build a thirty-foot boat?" Li Er looked at Zhang Nan and said.

"That's right." Zhang Nan said with a look of course.

"Do you know how big the biggest ship is now?" Li Er continued to ask.

"This, the minister really doesn't know, but does the emperor know how big the minister knows how big the biggest ship is?" Zhang Nan asked rhetorically.

Hearing Zhang Nan ask, Li Er knew that Zhang Nan didn't hold back his fart, but was ready to let him experience the feeling of a mountain cannon again, so Li Er didn't speak wittily, but began to stare at Zhang Nan with big eyes.

The atmosphere in the room was very embarrassing, and in the end, the eldest grandson queen came out to make a round and said.

"Okay, Qingquan, the thirty-zhang long boat you said, don't you really think it's a little too long?" Empress Changsun asked, after all, the biggest ship she had ever seen was Emperor Yang of Sui's dragon boat, in the eyes of Empress Changsun, it was already the largest, and now Zhang Nan's mouth was thirty zhang, and Empress Changsun also felt a little unrealistic.

"Actually, it's not big at all, after all, we're going out to pull things, not going out to play, your majesty, you have to think clearly, the bigger this ship is, the more things we can pull to our Datang, and our ship doesn't need manpower, it burns coal, in order to ensure the navigation of the ship, we have to bring a lot of coal." Zhang Nan explained.

After listening to Zhang Nan's explanation, Li Er pinched his chin and thought about it.

In fact, if you really don't care about manpower and material resources, if you don't care about manpower and material resources, you can also build it.

The size that Zhang Nan took out is not empty and white-toothed, after all, there is a precedent, although this example is an example of the Ming Dynasty.

Zheng He's voyage to the West can be said to be the largest, largest, most shipped, most seafarers, and longest sea voyage in ancient China and even in the world, decades earlier than the voyage time of European countries.

Although Zheng He dragged a boatload of things to scatter money and show off his might to distant countries, it is undeniable that its scale is indeed very large. In terms of the size of a single ship, it is enough to stand out from the crowd.

The largest of them, the "treasure ship", what kind of Dafa is it?

In Zheng He's fleet to the West, there were five types of ships, namely treasure ships, horse ships, grain ships, boarding ships and war ships, among which the treasure ships were the largest.

According to the "History of the Ming Dynasty: The Biography of Zheng He", Zheng He's fleet consisted of about 240 ships in total, including 63 treasure ships, the largest of which was 44 zhang long and 18 zhang wide, which is equivalent to 150 meters in length and 60 meters in width, making it the largest sea ship in the world at that time.

The ship has four layers, there are nine masts on the ship can hang twelve sails, the anchor weight is several thousand catties, it takes 200 people to set sail, a ship can accommodate more than 1,000 people, and the carrying capacity even exceeds 800 tons, which can be described as majestic, huge and unmatched.

So Zhang Nan now took out a thirty-zhang boat, Zhang Nan felt that it was really not big, especially for a person like Zhang Nan who lived in an era with aircraft carriers, a ship more than 100 meters long was really not enough.

"That means the ship can only be built in those docks by the sea." Li Er asked.

"That's right, we build a steam engine here in Chang'an City, build a ship by the sea, and when the time comes, we can pull the steam engine over and assemble it." Zhang Nan said.

"Okay, I've agreed, I'll write a decree now, let the local officials cooperate with the shipbuilding, well, let Qingquan supervise the construction." After Li Er finished speaking, he pointed at Zhang Nan with his finger.

"Huh? Do you want to oversee it? The minister still thinks that the emperor can just find someone to go. Zhang Nan asked, pointing to his nose.

"Who else could you have? Send other people to go and they don't know the more detailed things about this ship, besides, this time you don't have to go by land, just take a hot air balloon over, I think this shouldn't be slow, you can come back at any time. Li Erdao.

Zhang Nan was reminded by Li Er before he remembered that the current Datang is not the same as before, the current Datang has the existence of a hot air balloon, although the road looks far away, but if you want to fly from the sky, it will not be long, at least it is much faster than taking a carriage.

"Then the minister will go, but the minister has to bring a few people, and this hot air balloon emperor can't let the minister take it himself, the minister wants the hot air balloon you there." Zhang Nan hurriedly explained his requirements in advance.

Otherwise, this is a leg run, and finally put three or four hot air balloons on Li Er. Buying and selling at a loss, Zhang Nan will definitely not do it.

Li Er glanced at Zhang Nan, and then waved his hand, this time waving had two meanings, one was that he agreed, and the other meant to let Zhang Nan get out of his eyes quickly, and stop being an eyesore in front of his eyes.

Zhang Nan saw that Li Er agreed, so he gave up his resignation and began to prepare for his business trip.