The imperial capital of the Northern Han Dynasty finally did not use the name of the original capital of the Han Empire like the Western Qin Imperial Capital, otherwise the Northern Han Dynasty also had a Chang'an City in Europe at this time.

The imperial capital of the Northern Han Dynasty was originally located in the northeast region, but in order to cope with the increasingly frequent provocations of the Western Qin and the increasing threat of war in Europe, the imperial capital had to be moved to the territory of the European part.

Due to the use of a large number of European laborers, this imperial capital has a strong European style like Beigang.

However, compared with other European cities, the Northern Han Dynasty was more regular and clean.

In Europe at this time, not to mention ordinary towns, even the castles of nobles were also dirty and messy, and those marquis dukes walking in the gardens of their castles might be able to step on the thunder left by castle servants or knights.

In ordinary town streets, it is really a stream of feces and urine, and the excrement left by people and animals can crawl all over the walls around the streets in the summer.

The snow eagle flew over the imperial capital, and Liu Yi did not let the snow eagle fly directly to the Black Swan Castle in the north of the imperial capital, but jumped off the back of the eagle a few miles away from the Black Swan Castle.

If Cher flies directly to Black Swan Castle, it can frighten the guards and maids in the castle.

Liu Yi entered the Black Swan Castle and went directly to the secret vault in the castle.

The vault was built in conjunction with the construction of the Black Swan Castle and is made of reinforced obsidian bricks poured with copper juice.

Ordinary people are not allowed to go near the vault at all, let alone enter it.

In the Black Swan Castle, except for the Northern Han royal family, no one is allowed to enter the secret vault, and only members of the royal family have the key to open the vault.

Obviously, Liu Yi, as the princess of Jingnan of the Northern Han Dynasty, is the one who can enter the royal vault, and as the youngest sister of the current Han Emperor, she naturally holds the key to the vault.

The vault opened, and Liu Yi entered the vault, which was divided into three parts, and the largest chamber stored the gold and silver property owned by the royal family, which was different from the inventory in the treasury, and the wealth in the treasury belonged to the state, even the royal family would not use it easily. And the wealth in this secret vault belongs completely to the royal family and is completely at the disposal of the royal family.

Liu Yi walked through the piles of gold and silver and walked to a small secret room, where some parchment scrolls, calligraphy and painting scrolls were piled up, as well as some precious jewels and jade.

Liu Yi didn't stay, and walked directly to the innermost part of the secret room, where is an independent small room, in the small room, there are rows of bookshelves, which are full of notes left by the Han emperors here, and a bookshelf against the wall looks very ancient, it is made of cedar wood from North Asia, and the bookshelf of cedar wood is obviously touched by many hands, and the cedar wood touched is pulped.

On this bookshelf are the notes left by the ancestors of the Liu royal family, most of which are written in Chinese characters, but a few are written in characters that the Northern Han royal family could not understand at all.

Liu Yi took out these most precious notebooks, wrapped them in a piece of fine silk that he carried with him, and walked out of the secret room with them.

As soon as Liu Yi walked out of the secret room, she saw a middle-aged man who looked a little similar to her standing outside the secret vault, and the man also held a pink little hand in his hand, which was the hand of his little daughter who had just turned three.

"Brother Huang, why are you here?"

"I just heard from the servant that you are back, why didn't you come to see the imperial brother first, but came here first?"

"The imperial sister came to fetch some things, I was afraid that the imperial brother was busy just now, so I didn't bother."

"What did you take?"

"Well, it's the notes left by the ancestors, I'm bored in Beigang, so I want to take it with me to see if I can decipher the ancestors' notes."

"Imperial sister, you should know that those notes can't be taken out of the secret vault."

"Okay, just put the imperial sister back, the imperial brother let these notes fall into the dust in the secret vault, and he won't let the imperial sister take them to study."

"Forget it, you don't have to put it back, if you want to take it to Beigang to see it, we royal family don't know how long we have been studying these notebooks, and we have no clue. When you take it to Beigang, you can only see it for yourself, not for others. ”

"I knew that the imperial brother was the best for me, thank you, imperial brother."

"Since you're back, stay in Black Swan Castle for a few days, don't be in a hurry to go back to Beigang, a few little princes and princesses are also talking about you, your imperial sister-in-law has mentioned you several times in the past few days."

"Okay!"

"Why do you think the imperial brother is unhappy?"

"No, stay in Black Swan Castle for a few days, the royal sister is very happy, Xiao Tiantian, let the little aunt hug me."

Liu Yi said, put down the package in his hand, and picked up the three-year-old girl.

"Brother Huang, Xiao Tiantian and the imperial sister-in-law look the same, just as beautiful."

"Imperial sister, eldest imperial sister has news."

"Ah, where is the eldest sister now?"

"I don't know the specifics, I only know that she is in Nantang, and she asked someone to bring a letter here."

"Nantang, there has been no news from the eldest sister all these years, it turns out that she has arrived in Nantang."

"Well, she should have left Black Swan Castle and went to Nantang."

"Brother Huang, what did the eldest sister say in the letter? Did you say when she's going to be back? ”

"Her letter only said that I should kill a few people, and nothing else."

"Ahh What did the royal brother do? ”

"People have been killed."

"Oh, Brother Huang, when we capture the Southern Tang Dynasty, the Imperial Sister will lead someone to find the eldest imperial sister, even if the imperial sister turns over the Southern Tang Dynasty a few times, she will also find the eldest imperial sister."

"The eldest sister deliberately avoided us, even if we sent more people, we couldn't find her, imperial sister, we know that the eldest imperial sister is good in Nantang, and there is no need to force anything else."

"Oh, well, the royal sister listens to the royal brother."

At this time, the Han Emperor and Princess Jingnan walked towards the hall of the castle, and the servants they met along the way naturally saluted the Han Emperor and the princess.

"By the way, Imperial Sister, how are the preparations on the Beigang side?"

"As soon as the heavy fuel used by the ironclad ships arrives, they will be able to start training, and the guns delivered from the Americas are arriving in Beigang one after another, and I heard from officials in Beigang that the first batch of gunpowder will also arrive in Beigang before the end of the month."

"How's the training of those slaves?"

"At first, it was a little unsatisfactory, after killing a few loose and lazy ones, it was much better, although these slaves were not very good in combat, they could still consume some of the reserves of the Southern Tang army."

"Well, try to minimize the casualties of our army, we don't have many Han people."

"The royal sister knows."

"By the way, the royal brother, the imperial sister wants to ask the imperial brother for marriage."

"Oh, my little imperial sister finally has someone to look at!"

"Well, his name is Xiao Mo, he is a Han man of pure blood, he used to be a scribe in Beigang, and the imperial brother should remember the Pingnan, after the shipwreck, he was the only survivor."