Liu Yi served him to dress and tie his hair, Chen Fang could feel that she not only did these things, but also did them very well, ordinary royal princesses have been served by maids since birth, why is Liu Yi so different.

At this time, he couldn't figure it out, and Chen Fang didn't think much about it. However, after one night, Chen Fang had already figured out some things, and it was impossible to stop this inevitable war through Liu Yi.

Her identity is only the princess of the Northern Han Dynasty, and what Chen Fang can get from her is just some secrets of the Northern Han Dynasty, the shipbuilding center, and what level of structure and power the ship has reached at this time.

The last time I saw the fat-fired boiler was not ready to test to be able to use heavy fuel oil as fuel for ships.

I remember that the people on the slave catcher ship of Lao Scar said that the Pingnan ran very fast, and it seemed that at least as a power, the fat-burning boiler was successful.

At this time, how many such ship power units were there in Beihan, and was heavy oil already produced?

And to what extent did the weapons and armor of the Northern Han Dynasty develop, what kind of ammunition was used in artillery, solid bullets or flowering bullets, and did it make a big killing weapon like a musket?

There are too many things that Chen Fang needs to understand, know himself and know the enemy, Chen Fang does not seek to be able to defeat the Northern Han, at least he can find a way to make the Tang Dynasty able to compete with the Northern Han in a short time.

At this time, there are too many things for Chen Fang to understand, the behemoth with a height of nearly three meters in the gladiatorial arena yesterday is just the tip of the iceberg, how huge is the iceberg under the water?

Chen Fang wanted to know about the East and West Nangang, but after all, Nangang was mainly used for trading and transporting slaves, and these belonged to civilian use.

At this time, the military ships of the Northern Han Dynasty actually stayed in Beigang, for example, the home port of the Pingnan was Beihang. In the Northern Han Dynasty these days, Chen Fang actually heard a lot of things.

For example, the empire is stepping up the training of slaves, and even some slaves sold in the South Seas have been requisitioned by the empire, it seems that this is training cannon fodder.

And Liu Yi also mentioned some things to Chen Fang intentionally or unintentionally, such as last winter, the Americas transported a batch of military supplies to the northern part of Dahan through the continental ice shelves connected by Europe and Asia.

Through these things, Chen Fang had some guesses at this time that the arsenal of the Northern Han Dynasty might not be in Asia, but in the Americas, which would be easier to conceal, after all, whether it was the Tang Dynasty or the Western Qin, they did not know the existence of the Americas at this time.

The Tang Dynasty really didn't know, and the Western Qin should know, after all, their ancestor was also a traverser, and it was almost zero if he didn't know that the existence of the New World might be zero.

However, Western Qin did not have the energy to conquer the Americas, or even to send people there.

Therefore, the military factories of the Northern Han Dynasty should be located in the Americas, concealed and safe, so as to prevent them from being spied on by the spies of the Western Qin and Southern Tang Dynasties.

Chen Fang wants to know more, the place to go at this time should be Beigang, it is not realistic to go to the Americas, but it should be enough to understand the scale of military ships in the Northern Han Dynasty, the development level of artillery and firearms through Beigang.

Liu Yi tied up Chen Fang's hair, walked in front of Chen Fang, held his cheeks with both hands, and looked at it carefully.

"Your Highness, if you stay here for a few days, can Xiao Mo go to other places to see."

"Oh, where do you want to go?"

"I want to go back to Beigang to see!"

"Oh, before the accident on the Pingnan, you could still enter and exit the North Port, but at this time the North Port has been blocked."

Liu Yi looked at Chen Fang, and Chen Fang deliberately showed a very embarrassed expression. The blockade doesn't mean that there is a big move there, and it is even more important to see it at this time.

"But I can still take you there, and we'll go today."

"Your Highness!"

"Actually, it's nothing, you're originally from Northport, and it's appropriate to enter there."

Liu Yi said, took Chen Fang's hand to have breakfast, and after he was done, he asked the maid to prepare the carriage.

The North Port is quite far from here, and Chen Fang estimated that the location of the South Port should be the Liaodong Peninsula in the later generations, and the specific location should be in the area where the Bohai Bay and the Yellow Sea meet.

As for Beigang, Chen Fang guessed that it might be the most important military port in the Pacific region of a certain country in later generations, of course, it should have belonged to China.

The carriage went north, hurried during the day, and rested at night.

Chen Fang noticed that the roads here were built extremely wide, and if they were civilian, they would not be so well built.

On the way, Chen Fang met a lot of manors, at this time the northeast belongs to the spring season, there are many slaves in the manor are ploughing, the white-skinned overseer is wielding a leather whip, which slave is a little slack, will be whipped on him fiercely.

At this time, it was still very cold in the northeast, but the clothes of these slaves were thin.

This is this era, and Chen Fang can only look at it, and he can't change anything. I don't want to change anything. Looking at these at this time, it is like watching a wolf hunt a wild deer, and I feel that the wild deer is pitiful, but this is the law of nature after all.

Since it is only spring, the specific crops planted in the manor are invisible.

On the way, I passed a large manor and saw a potato drying in the sun, probably damp.

The further north he went, there were fewer and fewer such estates, and after passing through the Sanjiang Plain in later generations, Chen Fang saw a big river blocking the road, and guessed that this might be Heilongjiang.

After a few miles of road on the riverbank, a bridge appeared on the river, and Princess Jingnan showed her identity, and the soldiers guarding it were released.

It seems that this bridge is not civilian, but military, otherwise there would be no need to station soldiers.

To the north of the bridge, the mountains are continuous, and there is a snow-covered crown on the distant peaks.

The weather was already cold at this time, and the carriage was prepared with a thick coat, which had to be draped at this time.

When you get here, there are no farms anymore, and there are very few populated areas on the way.

Even if you happen to come across an inhabited area, there are only a dozen or so houses scattered around.

However, there is also a special pavilion on the road, so that the princess's car will not be driven in the cold wind.

But you don't have to think much about the facilities of these inns.

The night was unusually cold, and even though it was already mid-April, there was already snow.

At this time, think about Jiangnan, where it is already the beginning of May that is about to enter the prosperous summer, but this northern country is really cold.

At night, Liu Yi hugged Chen Fang tightly, and Chen Fang felt some warmth, this spring in the north can only sleep peacefully with a soft jade body.

At night, he heard the wolf howling, and the door of the pavilion was closed, and at midnight, Chen Fang heard the sound of claws scratching the wooden door when he got up at night.

I don't know if I went to Siberia at this time, and where the North Harbor is.

On the second day, the carriage was completely in the middle of the ice and snow, and the cold wind blew, and the waves of snow could be seen one after another, and in some sheltered places, you could see the claw marks left by wild beasts in the snow.

The road was actually out of sight, and the driver of the carriage had to take out a compass in his arms to confirm the direction.