Hong Tianbao followed Professor Fang to the tunnel. The tunnel was very dry. Strangely, there was no feeling of depression inside, and it seemed that ventilation measures were done better.

"This is the essence of the tomb of the ancient emperors. It clearly has no ventilation ports, but it can keep the air unobstructed. Many cultural relics cannot see oxygen, but they can remain intact in the tomb. In fact, many of the things here are still a mystery, and many of their things are beyond the reach of modern people." Professor Fang said.

Hong Tianbao nodded, and the two continued to move forward and soon arrived at the place where archaeologists worked. Everyone saw Professor Fang and greeted him. Professor Fang introduced Hong Tianbao to everyone. When they learned that Hong Tianbao was Professor Fang's disciple, everyone gave envious glances. In their eyes, Professor Fang is an authority in China, and being able to join Professor Fang's disciple is a bright future.

"Have you gained anything?" Professor Fang asked.

"Not yet. This is a mechanism. Our personnel have not yet been able to crack it. It seems to be related to the Five Elements and Eight Trigrams in Feng Shui." A leading man replied.

Professor Fang nodded, and he walked up to observe. This door was like an elevator door, with a mechanism beside the door. It was a disc, and the disc looked like a compass.

I saw that there were also Tianchi above, inner plate and outer plate.

Tianchi is a long black needle fixed in the center of the inner disk. There are many concentric circles printed on the inner disk, layer by layer. Each layer is divided into different equal parts. Some layers have more grids, some have few grids, and the least one is divided into eight grids. Each grid has different characters printed on it. The outer disk is a square stone block close to the stone wall.

There is also a pulley on the side that can rotate and control the rotation of the disc mechanism.

However, the content on the disc mechanism is the content of the Eight Trigrams, which record eight directions and are expressed in eight forms. Each hexagram shape represents a certain thing. Qian represents heaven, Kun represents earth, Kan represents water, Li represents fire. Zhen represents thunder, Gen represents mountain, Xun represents wind, and Dui represents swamp. The eight trigrams are matched with each other and sixty-four trigrams are used to symbolize various natural and human phenomena. There is a detailed discussion in the "Book of Changes". The Eight Trigrams are said to be created by Fuxi. Later they are used for divination.

"The combination of Eight Trigrams and Five Elements? This is not rare. However, this invisibly increases the difficulty of cracking dozens of times. Not only does it require correct verification of the Eight Trigrams in the inner layer, but it also needs to correspond to the Five Elements in the outer disk." Professor Fang said.

He carefully observed this strange combination, hoping to find out its rules.

The outer plate depicts the five elements, and the five elements of gold, wood, fire, water and earth are divided into five directions.

The Five Elements are a material view in ancient China. They are mostly used in philosophy, traditional Chinese medicine and divination. The Five Elements refer to: metal, wood, water, fire, and earth. It is believed that nature is composed of five elements, and with the rise and fall of these five elements, nature changes, which not only affects human destiny, but also causes all things in the universe to circulate continuously.

"I remember it seems that Zhen is the nature of thunder, which is located in the east; Dui is the nature of ze, which is gold, which is located in the west; Li is the nature of fire, which is fire, which is located in the south; Kan is the nature of water, which is water, which is located in the north; Kun is the nature of earth, which is located in the southwest; Gen is the nature of mountain, which is earth, which is located in the northeast; Xun is the nature of wind, which is wood, which is located in the southeast; Qian is the nature of heaven, which is gold, which is located in the northwest." Hong Tianbao remembered a book that Professor Fang showed him to introduce.

"Yes! It's true in principle. But there is an extra pulley here. When the pulley rotates, there may be some unforeseen dangers." Professor Fang said.

He turned his head and asked, "Are there any dangerous facilities such as arrow holes found around?"

"No discovery, there seems to be no anti-theft measures." One person replied.

Hong Tianbao looked around and found no stranger. For safety reasons, he used his spiritual sense to look at the surrounding passages. As soon as his spiritual sense was unfolded, he immediately discovered the hidden crisis here and was shocked and sweated.

He found that above this passage were made up of square boulders with wide passages. As long as the mechanism was touched randomly, the boulders hanging above would fall off one by one. It would definitely crush the people below.

Hong Tianbao simply continued to penetrate his spiritual sense and found that the ancient tomb was very strange and dangerous. There were several major barriers inside, and each barrier was extremely dangerous, but every time a barrier was opened, there were certain treasures. Just like encouraging people to pass through the barrier. The ancient tomb was not only divided into two layers inside and outside, but also had two layers above and below.

"It's actually the ancient tombs of two emperors?" Hong Tianbao was shocked. He found that there was an emperor buried on it, and there was an underground palace on the lower floor. It was more complex, more grand and more treasures than the one above.

"No, why is this happening? It's his tomb. No wonder people have never discovered his tomb." Hong Tianbao discovered something was wrong again.

According to Hong Tianbao's observation, the upper floor is indeed the tomb of the emperor, which should be the tomb of Liu Bao of the Han Dynasty. However, the cemetery below is not an emperor, but a famous king in history. In ancient times, emperors and kings had two concepts. The emperor was the son of the world, and the king was just the leader of a local separatist position.

Emperor Shun Liu Bao himself was gentle but weak. Later, the eunuchs and his relatives, Liang, began to have more than 20 years of autocracy. The eunuchs and relatives colluded with each other and became tyrannical. The Han Dynasty politics became more powerful, class contradictions became increasingly sharp, and the people complained, which was simply a waste of life.

Below the tomb of Emperor Shun, Cao Cao, the very famous leader of the Three Kingdoms period.

Everyone knows that Cao Cao was the founder and founder of Wei. He eliminated many separatist forces in the north, unified most areas of northern China, and implemented a series of policies to restore economic production and social order, laying the foundation for the establishment of Cao Wei.

Before this, Cao Cao's tomb had always been a mystery.

Cao Cao was different from emperors of all dynasties in funerals. He proposed a "black burial" for his afterlife. He was the first emperor in Chinese history to propose a "black burial".

At that time, although Cao Cao had not been emperor, his power and status were not lower than those of the emperor. Why did he not only advocate "small burial" but also practice it in his own way?

It is said that Cao Cao advocated frugality throughout his life, and he demanded extremely strictly on his family and officials. His son Cao Zhi's wife was "saded" according to the family rules because she was wearing silk. All kinds of used fabrics in the palace were repaired and used again after being broken, and they could not be replaced with new ones. At one time, there was a famine in the world and shortage of money and property. Cao Cao did not wear leather uniforms. In winter, officials in the court dared not wear leather hats.

It is also rumored that Cao Cao had done tomb robbery in his early years. He witnessed many corpses and messy scenes after being stolen. In order to prevent such tragic situations from occurring after his death, he repeatedly asked for a "black burial".

In order to prevent tomb robbery, while advocating and practicing "slight burial", he also took measures to "doubt" the problem. The arrangement of doubtful tombs was of course related to his suspicion. During his lifetime, he killed many people by mistake because of suspicion; after his death, his suspicion was no exception. Legend has it that on the day of his burial, 72 coffins were carried out from four directions, southeast, west and north, at the same time from various city gates.

Which of these 72 suspicious tombs is real? The eternal mystery of Cao Cao’s tomb is set up.

Over the past thousands of years, countless tomb robbers have been discovered, but no one has discovered the real tomb of Cao Cao.

Legend has it that in the era of warlords' melee, an antique businessman from the East India Company hired migrant workers to dig more than a dozen suspected tombs in order to find Cao Cao's real tomb. He found nothing except earthenware and earthenware.

No one expected that Cao Cao would hide his tomb under an emperor's tomb. He used other people's tombs as a cover in front of him, and was completely using others as a shield. It has to be said that this move is indeed superb, and people who have been fooled by almost two thousand years.

It seems that the thin burial advocated by Cao Cao is also a cover. His tomb has countless wealth, and various gold, silver and jewelry, Hong Tianbao found that it was piled up as high as a hill. A coffin was also made of the best nanmu wood, inlaid with various precious gems, and seven night pearls as big as fists were hung on it, distributed in the Big Dipper, emitting a soft light.

What excited Hong Tianbao the most was that he discovered a treasure that had been lost for more than 1,700 years: the seismometer!

The seismometer is an instrument for measuring earthquakes made by Zhang Heng, a scientist in the Han Dynasty. The seismometer is made of fine copper, and is engraved with seal script and figures such as mountains, turtles, birds, and beasts on the outside. A copper column stands in the center of the instrument; eight dragons are cast around the outside of the instrument, arranged in eight directions: east, south, west, north, southeast, northeast, southwest, and northwest.

The faucet is connected to the engine in the internal channel. Each faucet has a small copper bead in its mouth. The ground is aimed at the dragon's mouth, and eight copper toads are squatting, holding their heads and opening their mouths. When an earthquake occurs somewhere, the pillar will turn to that side and touch the tooth machine, causing the dragon in the direction of the earthquake to open its mouth and spit out the copper beads, falling into the copper toad's mouth, making a "clang" sound, and people will know which direction the earthquake occurred.

On December 13, 134 AD, a dragon machine of the seismometer suddenly started, spit out a copper ball, and fell into the toad's mouth. However, people in the capital (Luoyang) did not feel any signs of an earthquake, so some people began to talk about it and blamed the seismometer for being ineffective.

A few days later, someone in Longxi rushed to report to prove that an earthquake occurred there a few days ago, so people began to admire Zhang Heng's skillful skills. Longxi is more than a thousand miles away from Luoyang, and the seismometer is marked correctly, explaining that its quake measurement sensitivity is relatively high.

More than 1,700 years ago, the seismometer mysteriously disappeared, and its appearance and working principle became a mystery for the ages.

However, he didn't expect that he would take Cao Cao for himself. This also explains why Cao Cao wanted to find Liu Bao's tomb as his victim. During Liu Bao's reign, it was the time when Zhang Heng invented the seismometer.
Chapter completed!