"This secret history supervisor has a history."

"This historian is still worthy of admiration."

"There are more than a dozen dynasties before Dayin. The most recent ones have a lifespan of at least 3,000 to 4,000 years. Some of the older ones are said to have a lifespan of a million years. The emperors have been on the throne for tens of thousands of years at most."

"So many dynasties, so many emperors, so many major and minor events, clear and muddled things, all were recorded by this historian's pen and painstakingly preserved to this day, which is how the Secret History Bureau came into being."

In the imperial city, in the inner palace, in the alley between the palace walls on both sides, Lu Yi followed an old eunuch in purple clothes and jade belt, walking slowly along the alley.

At the previous grand court meeting, in the Fuyao Palace, Lu Yi raised his own small personal request to Yinyuan - he wanted to go to the Secret History Bureau to find a few suitable martial arts secret manuals to train the team of his own mansion.

This was a reasonable request, and Yinyuan agreed immediately. Even the cultural and educational officials did not react much.

It's just a martial arts secret book. Martial arts... are fading away like this.

Today, culture and education are flourishing, and this is the foundation of the court!

The palace walls were densely covered with imperial guards, and along the alleys, every hundred feet there was a heavy city gate.

After passing through nine city gates, Lu Yi finally saw a huge open space in front of him, with a huge stone palace in the middle.

The open space is more than three miles long and wide, and is paved entirely with large water-polished bluestones. There is not a single flower, grass, or tree to be seen.

The stone hall in the middle of the open space is square like a brick placed on the ground. The whole body is made of huge stones. It is not beautiful, but it is very solid and heavy.

After years of baptism, the stone hall, which is about two miles long and wide and more than ten feet high, is covered with a thick layer of blue-black color.

Beneath this layer of weathered color, Lu Yi saw that on the outer wall of the stone hall, there were huge, magnificent patterns like dragons, which covered the entire stone hall like climbing ivy.

When Lu Yi looked at these patterns, his mind suddenly flashed with spiritual light, and even the visualization picture of the three-eyed god inexplicably lit up.

"These tattoos?"

Lu Yi asked the old eunuch.

The old eunuch stood with his hands behind his back, frowning as he looked at the majestic stone palace in front of him: "No one knows what these seals are. However, some scholars serving in the imperial city said that these seals may be some legendary existences with extraordinary powers."

"But over the years, apart from the occasional thunderstorms and flashes of light from these patterns in the middle of the night, there has been no movement here."

The old eunuch sighed and said, "I have been in the Secret History Bureau for ninety years. Those scholars talked about all kinds of things, such as runes, talismans, and transcendence. Tsk, I can't see them!"

Lu Yi took a deep look at the patterns that seemed to have grown directly from the boulders on the outer wall of the stone hall, like naturally formed patterns, and said with a smile: "Don't say that, old man. I have seen female ghosts. Who knows what the future holds?"

The old eunuch tutted a few times and nodded thoughtfully: "That's right, I've seen female ghosts, what if... Hehe, Lord Tianyang, please, please, please, the higher-ups have told us not to discuss what happened last night in the palace any more."

The old eunuch reminded Lu Yi.

Concubine Qi, Lu Que, and all the sneaky people have been wiped out by Lu Yi, but this is still a worry for the Queen Mother. Discussing the matter of female ghosts in the palace, aren't you trying to please the Queen Mother?

Lu Yi smiled and nodded, then followed the old eunuch step by step into the stone hall and into the Secret History Hall.

"This secret history prison is only this big. The stone palace on the ground is divided into nine floors. It stores some common information about Dayin Jiuzhou. For example, the original manuscripts of Jiuzhou Geography from all dynasties are stored here."

After entering the stone hall, there was a long and quiet corridor with heavy stone archways. The old eunuch pushed open two of the stone archways, and Lu Yi saw a huge space inside. Rows of densely packed bookshelves made of ebony were neatly arranged, piled with all kinds of classics and secret files.

Those classics and secret files include stone slabs, wooden boards, clay tablets, leather scrolls, and various strange materials such as animal bones and tortoise shells. In contrast, paper and other materials only account for a very small part.

When the stone archway opened, a slightly suffocating aroma wafted out from inside.

The old eunuch let Lu Yi take a careful look at it for a while, then waved his hand and asked several young eunuchs to close the stone archway: "The incense inside is all very particular. It is a recipe left behind by the oldest national dynasty, the Holy Divine Dynasty, which was eighteen generations ago before Dayin."

"The recipe is very simple. It is made by mixing dozens of common spices and medicinal herbs to make the 'Waste-killing Incense'. If you put it in your study, it can extend the life of fragile book pages and bamboo slips by hundreds of times."

"This recipe has been passed down from generation to generation since the Holy Dynasty. Many things have been lost, but the 'Blight-killing Incense' stands out and has been preserved to this day."
The old eunuch led Lu Yi forward and said, "Lord Tianyang, copy this recipe later. In the future, Lord Tianyang's family will surely prosper. A wealthy family must have a collection of books, and must have its own library, study tower, and library. If you want to have a collection of books, you must have "Juewuxiang". Don't you think this makes sense?"

Lu Yi smiled and bowed to the old eunuch: "You are right, I really need to copy this recipe back. Well, if you have ready-made incense for killing woodworms, you can sell me a few baskets."

The old eunuch smiled until his eyes narrowed. "No problem, no problem. We are all family. I will give you the cost price. It's all easy."

After walking along the corridor for a while and passing through three heavy doors, there is a stone staircase leading downwards.

The real important places of the Secret History Bureau, the truly precious books, and the secret files that ordinary people cannot read are all underground.

Going down the spiral stone steps little by little, every time you descend about ten feet in height, there is a small circular platform, guarded by soldiers and eunuchs. On the platform, there are three or five tightly closed stone doors, and no one knows what is behind them.

"This secret history prison has a huge underground area." The old eunuch led Lu Yi down and introduced: "After Dayin was founded, it has never been expanded or renovated. It is really too big."

"There are layers upon layers of secret history prisons. I won't talk about the ones below. Just the total area of ​​the nine underground floors is twice as large as the imperial city above ground!"

"Tsk, I wonder how those craftsmen built such a large underground building. And how many dynasties it has gone through to be repaired and expanded to reach its current size."

Lu Yi followed the old eunuch all the way down.

There were no candles underground, but on the walls, at regular intervals, there was a mountain-shaped bronze candlestick with fist-sized luminous pearls stacked on it, emitting a blue-white light that illuminated all directions.

I don’t know where the ventilation pipe is, but when Lu Yi went down, he could clearly feel the cool breeze on his face. Even though he was dozens of feet underground, he didn’t feel stuffy at all.

After walking for a while, the old eunuch brought Lu Yi to a circular platform.

There are three stone doors on this platform.

Two of the stone doors were open, and with the light of the night pearl, one could see that behind the stone doors were two vast underground halls. Many men, young and old, dressed in green robes and small hats, with obsessed looks, were walking through the densely packed bookshelves.

Occasionally, there would be voices of abuse that were either hoarse or clear and high-pitched.

"It's simply ridiculous. There are many strange and supernatural things in ancient books. I thought it was just a lie... but I didn't expect it to be true?"

"Oh my, are we expected to find a cure for evil spirits from these piles of old papers? We are scholars who have studied the classics for our whole lives, not great sorcerers who can exorcise demons and monsters!"

"Everyone, everyone, don't you think this is very interesting? The joy of us scholars is to seek all the unknown things in the world. Monsters, ghosts, female ghosts, foxes, haha, I am already salivating!"

What a great appetite!

Lu Yu stood on tiptoe, wanting to take a look at this old gentleman with a unique taste, but there were too many bookshelves, too high, and too dense, and he didn't know who was making the bold statement.

The old eunuch lowered his voice and chuckled softly, "Alas, something like this has happened in the palace. Once it happens, there will be another. If you don't think about the future, you will have immediate worries. So, the Queen Mother has issued an order to have the internal historians of the Internal History Office and the scholars in the Imperial City come to the Secret History Office to check the secret files and see if there is a good solution."

Lu Yi nodded, this was a very wise response.

The Queen Mother and the Emperor would never be so foolish as to think that as long as they eliminated Concubine Qi and Lu Que, the world would be truly peaceful.

The old eunuch smiled and waved his hand, and several young eunuchs pushed open the third tightly closed stone door.

"The two secret chambers contain books on the supernatural and strange. Well, this secret chamber contains various martial arts techniques. Oh, Lord Tianyang, the martial arts techniques in this secret chamber can be practiced, but the martial arts techniques in the lower secret chambers cannot be practiced at all."

Lu Yi turned around, glanced at the old eunuch, and said in a deep voice: "Thank you for your advice. Well, I have the clan martial arts of the Jingyang Lu family. I don't need anything else. I just need some external skills to train my personal guards."

After a pause, Lu Yi smiled and said, "However, can you give me the books about those things that you said are completely impossible to practice, so that I can learn from them?"

The old eunuch smiled kindly and said, "There is nothing we cannot do among our family. Well, since you want to learn from them, I will bring you a few secret files from the recent, medieval, and ancient times."

"Hey, I've been in the Secret History Department all my life, and when I'm bored on weekdays, I like to look through these things."

"Those recent and ancient techniques are fine, but among those medieval and ancient techniques, there are actually some techniques that claim to 'condense the nine heavenly thunder and transform the lightning into thunder liquid' and 'cleanse the muscles and bones with thunder liquid' in order to cultivate the 'divine thunder holy body'."

"How... incredible?" The old eunuch shook his head in amazement and took Lu Yi into the secret chamber that had just been opened.