Qin Ze is most relieved that Wang Yuxi and the others are the ones who usually have their own seats, and they don't dare to be presumptuous, but now that they leave Chang'an, there will inevitably be some chaos.

Especially this operation, whether it is Impermanence or Steward Zhou, he has to leave all the time, which means that the safety of the entire Qin Mansion can only be maintained in the hands of Song Fang and others.

It stands to reason that it is natural to deal with ordinary people, but in case the other party is a person from the six gates, it is difficult to say. So in the end, there was really no way, Qin Ze had no choice but to let someone from the Emperor Palace stay. And Mangniu and Erhu also stayed together, so that if something really happened, they should be able to deal with it.

Qin Ze's statement to the outside world was to go to suppress the Wa State, and under the rhetoric of Du Ruhui and Tang Jian, this excuse gave Qin Ze the opportunity to go to sea after all. As for how to dodge those dark eyeliner, it's very simple.

After all, with the current strength of the Qin Mansion and the Emperor Palace, it is not very simple to hide their whereabouts unnoticed. Besides, Li Er didn't suspect this matter at all, at most he would question Qin Ze's intention to go to the Wa Kingdom.

It's just that because the Qin family is still in Chang'an, he is not worried at all.

This trip is likely to be two years, so Qin Ze must plan all the future development of Datang Academy. In fact, there is not much planning that Qin Ze needs to do, after all, the six departments have now entered the formality.

The only thing Qin Ze needs to worry about is Li Tai's uncertain factor, this guy's ambition has always been great. It's just that because of Li Chengqian, his ambition was suppressed, and when Qin Ze transferred his ambition from the position of emperor to miscellaneous subjects, his ambition swelled again. Fortunately, his expansion is not only harmless to Datang, but also greatly promotes the development of Datang.

In two years, if Li Tai were to study those gears and cams, he would definitely go crazy, there is no doubt about that. So this time, Qin Ze had to draw a pie that was big enough to kill his energy.

When I came to this small courtyard of Li Tai, I saw at a glance that this guy was directing some craftsmen to assemble something. And Li Tai also pouted when he saw Qin Ze coming, and he didn't want to see him.

Qin Ze scratched his head, and he also knew why Li Tai treated him like this at this time, so he stood aside and watched with self-knowledge.

At just one glance, Qin Ze could see that this group of craftsmen was assembling bicycles, but compared to the shoddy goods before, this was obviously a lot more exquisite. The amount of steel used is a little more streamlined, and there are traces of polishing at the corners.

"The chain you're talking about is still a little too difficult to build, so that's the only way to do it now." Li Tai picked up a chain from the ground and said.

Qin Ze glanced at the chain that was obviously two fingers wide and said, "That's why I haven't wanted to teach you anything else, since the chain can't be streamlined, why don't you try gears?" Drawing inferences is what I want to see, if ......"

Before Qin Ze's words were finished, he stopped directly. Because he had already noticed that Li Tai showed impatience on his face, he also knew that it was pointless to continue talking like this.

"It's not that the gears haven't been considered, and a model has been made, but it's just too heavy to ride." Li Tai stretched out his hand and pointed to the side, and said with little interest.

In fact, this guy is very smart in his own right, but he is a little too anxious, and as long as he can calm down, there is nothing he can't do.

Seeing him like this, Qin Ze also shook his head, and then pulled Li Tai to the front yard. There is a boiler more than one person high here, which Qin Ze took a few days to get a craftsman to make.

It was a simple steam engine with only one crankshaft, which was not only underpowered but also consumed a lot of coal.

The huge boiler boils boiling water, and the only crankshaft is connected to a stone mill at one end. Because it's just a model, the overall structure still looks a little incongruous.

However, although it seemed to Qin Ze that this thing was simply a handicraft, it was already very incredible for Li Tai, because in terms of complexity, this was already the highest level of machinery he had ever seen.

"What's the use of this thing?" Li Taimo rubbed his palm and asked excitedly.

Qin Ze didn't reply, but waited until the hot water in the pot boiled to a certain level before loosening the fixed plug of the boiler.

A large amount of water vapor gathered in the boiler, and after Qin Ze opened the stopper, it rushed towards the gas cavity. The enormous thrust of the water vapor pushes the movement of the piston in the air cavity, one end of which is connected to the crank. Therefore, as soon as the crank moves, it will drive the stone mill to rotate together.

This is a cyclical process, and the biggest advantage of the steam engine compared to the stone mill is that it is free from the limitations of nature.

Li Tai on the side looked at the huge machine, and his eyes were also projecting strange flashes. He even leaned next to the stone mill and looked at it with interest.

"It's just a minimal model, and if you can put it to use, then we'll have carts that don't need to be pulled and boats that don't need sails." Qin Ze patted Li Tai's shoulder and said.

This machine is still too simple, the sealing of the air cavity is not high, and the opening and closing time of the piston is also problematic, especially the huge roar that it produces, which makes Qin Ze feel disappointed.

And there is a huge hidden danger in this thing, that is, if the air pressure in the boiler is not well controlled, it may also lead to an explosion.

These are all problems, but they are not Qin Ze's problems. Two years should be enough time for Li Tai to toss, maybe by the time Qin Ze comes back, he will already be able to see the steam cars walking everywhere.

And this rudimentary steam machine is the beginning of it all.

"I'll probably have to go to sea once, so I'll have to rely on you in the future." Qin Ze saw that Li Tai was fascinated, and he also said this.

Without the excitement that Qin Ze imagined, and there was no retention as Qin Ze imagined, Li Tai just nodded and then pointed to the machine and asked, "What is this thing called?" ”

The emperor's family is all white-eyed wolves, especially Li Tai. It is estimated that in his opinion, at this time in his heart, only this steam engine is the most precious......

The fifth sea ship was the most extravagant of all the sea ships, and for this reason, Qin Ze spent a lot of time placing all kinds of food in it. Not only are there cans, but there is also a huge kitchen inside. Of course, the most thing is gunpowder, after all, this time he still has the task of suppressing the Japanese state.

In fact, the rated capacity of each sea ship is about one hundred to one hundred and fifty, so in this way, except for Mo Xuan and the others, the others can only walk over by land.

Because Qin Ze was taking advantage of the reason to suppress the Wa State this time, the troops that should have been carried out as always.

The weather in October is already a bit cold, especially in Chang'an. And the reason why Qin Ze chose this time to leave was to wait until he arrived at the North Pole, which happened to be summer. Second, in another half a month, the Jing River is likely to freeze, and if it is at that time, it will be a little difficult for Qin Ze to leave.

The people who were blown by the cold wind were a little shivering, and Qin Ze stood on the bow of the boat and looked at Cheng Lao Demon under the boat, and he also waved his hand and said: "The kid will definitely bring Brother Huailiang back this time, and he will definitely get drunk with his uncle at that time." ”

"When I saw my unscrupulous son, I kicked him twice for him, and asked him why he couldn't take a small country for so long." Cheng Lao Demon stood under the boat and said and made a kicking motion.

Qin Ze was directly amused by Cheng Laoyou's words, and he also shrugged his shoulders and smiled: "If you beat Brother Huailiang, the kid will naturally ask for your uncle." ”

Although Qin Ze was talking and laughing with Cheng Laoyou, his eyes kept looking at the corner to the side.

There, Wang Yuxi and Li Shiyun were standing with their two children in their arms, and Su Yi next to them could only stand on the side empty-handed because her stomach was already bulging. Qin Ze wanted to talk to them, but he knew that it was impossible.

Wang Yuxi hugged Qin Yu and waved his hand at Qin Ze with a smile, and Li Shiyun and Su Yi on the side also waved their hands in unison......

"The general's hour has come, shouldn't you go?" The deputy came up and whispered in Qin Ze's ear.

"Anchor and sail." Qin Ze nodded at Wang Yuxi and the others, and then waved his hand and ordered behind him.

It will take at least four months to get from here to the Wa Kingdom, and according to Qin Ze's idea, after the Wa Kingdom gets the ink jade, let Cheng Huailiang go to South America for a walk first, and it is best to bring back what he wants.

What Qin Ze wanted was peppers, corn, and potatoes, while what the big brother king wanted was the entire Wa Kingdom.

Months have passed since the civil strife continued, and he has killed almost no one of the Soga family. The huge internal friction has made the already fragile state even more fragile.

The entire imperial city has been completely deserted, but the eldest brother king is still very happy, because now there is finally no one to compete with him for the throne.

It's just that although no one competes with him for the throne anymore, he has never found any excuse to convince Cheng Huailiang.

I thought that letting the Tang Army fight with the people of the Su I family could weaken the strength of the Tang Army, but until now, the gunpowder in the hands of the Tang Army has not stopped.

The same excuse can be used once, but it can't be used all the time. The number of times Cheng Huailiang came to ask questions has become more and more frequent, but the eldest brother of the mountain, the king, still hasn't figured out how to take out the dragon.

"Your Majesty, the Tang army has not retreated for a long time, I am afraid that it has become suspicious, if it continues to be allowed to stay here, I am afraid that sooner or later there will be trouble." Jiuye Shu stood at the bottom and looked at the ruined imperial city and said.

The hands of the eldest brother Wang behind his back also shook it hard, and after a long time, he turned his head and ordered: "Go and invite the national teacher, it's time to attack the Tang army." ”