In the secret chamber which is more than ten acres in size, there is a small desk, a soft stool, and tea and snacks in the corner.

Lu Yu sat at the desk, flipping through the books on external skills that represented the pinnacle of Dayin martial arts.

The Dayinwu Dynasty, as the name suggests, was founded on military power. When Taizu established the country, he collected all the martial arts in the world.

The mountain-like pile of refining classics in front of Lu Yu included the "Pan Gen Shan Jin" commonly practiced by the imperial guards, and the upgraded version "Bulk Xumi Feng" practiced by the middle and high-level officers of the imperial guards.

There is also the "Bengshan Suanni Jin" commonly practiced by the soldiers of the Yulin Army, as well as the "Baijie Manlongti" which is an upgraded version practiced by the middle and high-level generals of the Yulin Army.

Lu Yu carefully read through these martial arts secret manuals, his mind flickering with spiritual enlightenment, and he memorized all the secret manuals word by word in his heart.

People have different physiques and are suited to different exercises.

By practicing the same "Pan Gen Shan Jin", some soldiers of the Imperial Guards could reach the strength of several thousand kilograms in just two or three years, while some soldiers of the Imperial Guards could only reach the strength of several hundred kilograms in just seven or eight years.

Lu Yi didn't know which martial arts method was suitable for Ah Hu's physique, so he planned to memorize a few and let Ah Hu try them one by one when he got back.

Not to mention, besides Ah Hu, there are so many brothers in the 'Bai Hu Tang'?

Anyway, after cultivating his spiritual power, Lu Yi had the ability to remember everything he saw, and it was easy for him to memorize hundreds of martial arts books.

A young eunuch in a red robe ran over with a big smile on his face, laughing like a hen all the way: "Oh, Lord Tianyang, look, what did I find? Hee, you must like this treasure!"

Lu Yu dropped the "Swift Wind Wolf Body" secret book in his hand and looked at the eunuch who was smiling and obviously trying to please him: "Oh, did the eunuch find something good?"

By the way, the "Swift Wind Wolf Body" technique is the main training method of the Wolf Riders under the command of Tian En Gong Lu Yu. After practicing, it can best strengthen the strength of the tendons, allowing the practitioner to increase speed and endurance.

The young eunuch came up to Lu Yi with a smile, raised his thumb, and pointed behind him: "The original copy of the three martial arts of the Laiguo Mansion, including the Jieshi Gong, please take a look. This must be correct."

Behind the young eunuch, several eunuchs wearing green robes, whose cultivation base was above the Tuomai Realm, were holding their breath until their faces turned red. They worked together to use an iron bar to slowly lift a stone tablet over.

"Jieshi Gong"?

Lu Yi stood up suddenly, took a step forward, rushed to the eunuchs, gently grabbed the stone tablet with both hands, and placed it carefully on the ground.

When the young eunuch in red robe saw Lu Yi pick up the stone tablet so easily, he couldn't help but chuckle and exclaimed: "Oh, Lord Tianyang is so powerful, wow."

Lu Yu didn't care about these little eunuchs. He looked at the stone tablet in front of him carefully, and his mind was full of spiritual light. He felt that his chance might be here.

The "Cang Hai Jin" of the Duke of Lai's Mansion is the fundamental method of Yuan Gang practice; the "Jing Tao Shou" is a method of attack in combat.

The first Duke of Lai was able to fight on the battlefield, so he naturally had a top-level training method, the "Jieshi Gong". It was precisely because of the strong body tempered by the "Jieshi Gong" that the first Duke of Lai was able to be fearless of swords, guns and arrows on the battlefield and establish a glorious military exploit.

Lu Yi had learned "Cang Hai Jin" and "Jing Tao Shou", and he was very good at both.

But the "Jieshi Gong" was actually lost in the Mansion of Duke Lai before Five Dynasties.

It is said that five generations ago, the Duke of Lai's beloved son practiced the "Jieshi Gong" and was too eager for success, so much so that all his bones and meridians were broken, and he became a complete disabled person.

The Duke of Lai five generations ago - who also could not bear the pain and failed to learn the "Jie Shi Gong", angrily denounced the "Jie Shi Gong" as a "witchcraft" that harms people, and ordered his family generals to completely destroy the "Jie Shi Gong" engraved on the stone tablet in front of the ancestral hall.

The following generations of Duke Lai did not take this matter to heart. After all, they would not work so hard to train their bodies, right?

When it comes to this generation of Lu Yu, he is wholeheartedly devoted to being a "refined" scholar. He probably has long forgotten that his ancestors once had such a top-notch horizontal training method.

Therefore, Lu Yi vaguely knew that the Laiguo Mansion had such an ancestral magical skill, but he had no chance to practice it.

The Three Warriors of the Jingyang Lu Clan stored in the Secret History Museum is the original version that the first Duke of Lai deposited in the Secret History Museum. It is a dark brown stone slab three inches thick, one foot wide, and about six feet high.

Such a small piece of stone slab actually weighs more than 30,000 kilograms, so several eunuchs at the Tuomai realm were mobilized to carry it over from the bookshelf of the "Military Merits" deep in the secret chamber with great difficulty.

On the thick stone slabs, there are layers of clear water ripples, as if they had been washed endlessly by overlapping waves in extremely deep water for tens of millions of years.

If you stare at it for a long time, you will even feel that the ripples on the stone tablet seem to have really turned into a vast ocean, with waves coming towards you in an overwhelming manner, ready to smash everything in the world into pieces.

There is a shallow layer of seal carving on the surface of the stone tablet.

The fine handwriting, densely packed with tens of thousands of words, is exactly the practice methods of the three kinds of martial arts: "Cang Hai Jin", "Jing Tao Shou" and "Jie Shi Gong".

The font on the stone tablet is slightly different from the common characters used in Dayin today. It is an extremely ancient script.

Thanks to Lu Yi's low-key and diligent study in the clan school, the clan school of Duke Lai's mansion had an extremely rich collection of books, and he was blessed with a photographic memory.

Lu Yi recognized all these ancient characters.

With his soul and aura shaking in his mind, Lu Yi stretched out his hand and pressed on the stone slab. The sound of waves faintly rang in his ears. On the stone slab, a vast, heavy, overlapping and endless force came continuously, echoing the Cang Hai Jin Yuan Gang in Lu Yi's body.

"Jieshi Gong" is a horizontal training method combined with "Canghai Jin".

Only by successfully practicing the Cang Hai Jin Yuan Gang can one use the potential force of one layer of Yuan Gang after another to polish oneself, and temper the muscles, bones, flesh and skin of the whole body, just like the huge waves at the seaside that wash the reefs year after year and day after day, and eventually polish the reefs into a round and solid state.
Without the power of Cang Hai, you cannot practice Jie Shi Kung Fu.

Except for Jieshi Gong, other horizontal training methods cannot be compatible with Canghai Jin and exert the greatest effect.

Lu Yi thought of the legendary former Duke of Lai who ordered the smashing of the ancestral stone tablet in front of the ancestral hall: "A prodigal son, a real prodigal son!"

With the sound of footsteps, the old eunuch came over with a group of young eunuchs.

The young eunuchs were holding things like animal bones, stone slabs, animal skins, and statues, which had various patterns or dense handwriting on them. These were all stored in the secret chamber further down, and they contained various medieval and ancient secret techniques.

"Oh, Lord Tianyang, this stone tablet was originally the treasure of the Jingyang Lu family."

The old eunuch smiled brightly. "I usually read the secret files. When Dayin was founded, the country was in turmoil for the first few decades. The first Duke of Lai was worried that this treasure would be damaged or lost, so he reported to Taizu and had the stone tablet deposited in the Secret History Bureau... This is the safest place in Gaojing City."

"Later, the first Duke of Lai carved a stone tablet himself and placed it in front of the ancestral hall as a token of the family's martial arts heritage. This original stone tablet has been kept in the Secret History Bureau for more than a thousand years."

Lu Yi stroked the stone tablet and said softly, "The texture of this stone tablet is very strange."

The old eunuch smiled and nodded, "It is indeed strange. I have lived for so many years and have seen a lot in the Secret History Bureau, but I have never seen the same material. However, it makes sense. The Jingyang Lu family has a long history. According to the records of the Secret History Bureau, the ancestors of the Jingyang Lu family can be traced back to before the 12th generation of the national dynasty."

"This stone tablet has been in the hands of the Lu family in Jingyang for at least tens of thousands of years. It is a valuable item."

Lu Yi smiled.

The Jingyang Lu family can be traced back to before the 12th dynasty, and its family history is more than just tens of thousands of years.

This stone tablet could become the inheritance of the Jingyang Lu family. Haha, Lu Yi couldn't believe that the first Duke of Lai would actually "deposit" this treasure in the Secret History Bureau. The inheritance in front of his own ancestral hall was just an ordinary stone tablet.

The Lu family of Jingyang is a wealthy and powerful family. How could they not find a safe and secret place to store the stone tablet in their own territory?

Needless to say, the first Duke of Lai placed this stone tablet in the Secret History Bureau, which must have something to do with Dayin's founding ancestor.

For example, 'The Warlords'.

For example, 'collateral'.

For example, 'pigtail'.

Lu Yi would never believe that the first Duke of Lai was willing to put this treasure into the Secret History Bureau.

But none of this matters anymore.

Lu Yi said softly, "Thank you, eunuch. Can you bring me some of the heirlooms of the founding fathers, if any, that the Secret History Bureau has, so that I can see them?"

"Faced with the relics of my ancestors, I am very excited. I want to enter a state of meditation and practice the Jieshi Kung Fu now."

"Please give me some convenience, sir."

Lu Yi sat cross-legged in front of the stone tablet.

There was a loud sound of waves in his body, and a layer of faint blue Yuan Gang light gradually lit up on the surface of his body.

The old and young eunuchs hurriedly responded to Lu Yi, then turned around and left quietly.

They can understand Lu Yi's feelings.

After all, this is a treasure that has been lost in the Laiguo Mansion for five generations of dukes and nearly three hundred years.

It is natural that Lu Yi is eager to practice.

As for Lu Yi wanting to see the family heirlooms of other founding nobles... it's a bit taboo, but Lu Yi is a favorite of the current emperor, and even the empress dowager is very grateful to him.

This taboo is nothing.

What's more, the younger generations of the founding fathers, the contemporary dukes, none of them practice martial arts, but specialize in literature and painting to show off their elegance... Presumably, they would not mind if their family's martial arts were seen by Lu Yi, right?

As soon as the old and young eunuchs left, Lu Yi placed his hands on the stone tablet.

The spiritual light of his soul flowed like water, passing through his arms and continuously pouring into the stone tablet.

The deafening sound of waves rang in Lu Yi's mind. Inside the stone tablet, in a place invisible to the naked eye, an extremely dim blue light was madly absorbing the spiritual light injected by Lu Yi.

The blue light suddenly lit up, and then illuminated the entire stone tablet in an instant.

A vast, magnificent, profound, and distant consciousness entered Lu Yi's mind:

'Three Immortal Realms, Supreme Holy Heaven, Supreme Beiming Immortal Sect, Fundamental Law of the Immortal Way, Infinite Return to the Ruins Body'!

The muscles and bones in his body all vibrated, and with a loud bang, the Cang Hai Jing Yuan Gang in Lu Yi's body began to collapse and compress madly.

At the same time, with a "ding" sound, a water ripple appeared on the surface of the stone tablet, and a black ring with an ancient shape flew out through the water waves and landed right in front of Lu Yi.