This dream rebirth took time to prepare, so Marcy and Le Su slowed down and lived a few quiet days. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

The two are becoming more and more like a couple, although Le Su is older than Ma Qian, but Ma Qian is also over fifteen years old, and her temperament and mind are more mature than her actual age.

In addition, it is common for couples to have men and women, and the age gap between them is not particularly large. Even if it is the other way around, it is not so uncommon for a woman to fall in love with a young man.

Since most of the books in the living room were read by Marsie, she stayed more in her room, and Le Su was very interested in the book about unsolved mysteries, so she read it directly in Marsie's room.

"What are you looking at?!"

Ma Qian stood behind Le Su at some point and suddenly asked.

This didn't quite fit Ma Qian's style of acting, and it scared Le Su a little, and he was stunned for a moment before replying: "The three natural disasters in history. ”

"Interesting?" Marcy asked with a smile.

"I think it's interesting, but there's no guarantee that you'll find it interesting to watch."

"Then let's watch together, I believe in your feelings!"

With that, Marsie brought a chair and sat next to Lesu. The two are very close, and Le Su can feel the breath of a girl.

In Marcy's room, Lesu usually sits at her desk and reads. Marcy put the book on the bedside table and sat on the bed to read.

Ma Qian probably felt tired, and when she got up and walked around, she saw that Le Su was watching with relish, so the scene just now happened......

The three natural disasters refer to the Tunguska explosion in Russia, the Apocalypse explosion in China (Wang Gongchang explosion), and the Death Hill event in India.

The Tunguska explosion occurred at 7:17 a.m. on June 30, 1908.

As the name suggests, the Apocalypse Big Bang occurred during the Ming Dynasty's Apocalypse, and the specific time was on the morning of May 30, 1626 AD.

The Dead Mound event in India is very old, about 3,000 years ago, and the ruins were discovered in 1922.

The three events are from near to far, and the outline of the event is becoming more and more blurred. This is easy to understand, after all, the more time passes, the less historical materials there are, and among them, Dead Hill is a lost civilization that has not left any direct records.

Of these three events, the Tunguska explosion is the most famous, and it has been determined that it was a meteorite that crashed into the atmosphere and caused a huge explosion before it hit the ground.

The explosion took place in the Tunguska region of present-day Siberia, Russia, and began with a huge fireball piercing the night sky, causing a massive explosion equivalent to the energy of 1,000 Hiroshima atomic bombs. The ensuing fires destroyed vast swaths of primeval forest, and the sky over the Tunguska region was shrouded in an eerie orange for days.

The Apocalypse explosion is more complicated, because it occurred in the Ming Dynasty Jingshi Wang Gong Factory, so it is also called Wang Gong Factory explosion, is the morning of May 30, 1626 AD, Wang Gong Factory near the area of the explosive powder depot of the bizarre explosion.

In the morning, the sky was bright and clear, and suddenly there was a roar, from the northeast to the southwest corner of the capital, the gray air surged, and the houses were turbulent.

At the moment, there was a big earthquake, the sky collapsed, it was as dark as night, and the room was flat. If the messy silk, if the five colors, if the Ganoderma lucidum-like smoke rises to the sky, it will disperse after a long time.

From Shunchengmen Street in the east, to Xingbu Street in the north, it is three to four miles long, thirteen miles around, tens of thousands of houses, more than 20,000 people are smashed, rubble falls from the sky, and people's heads and arms, legs, ears, noses, etc. fall from the air.

The explosion had a radius of about 750 meters and an area of 2.25 square kilometers. A total of about 20,000 people were killed and injured, and it is very strange that there was a widespread phenomenon of undressing -- "the dead and wounded were naked." Many clothes were scraped to the west mountain, hung on trees, and piled up in the Changping Prefecture church.

There are different opinions as to why the Big Bang occurred. Some believe that it was caused by an earthquake, some said that it was a spontaneous explosion of gunpowder, some thought it was a meteorite falling, and some thought that it was an earthquake, gunpowder and combustible gas explosion at the same time.

The last of these arguments seems to be more reliable, but although the Wang Gong factory in the center of the catastrophe had a gunpowder magazine, the gunpowder explosion at that time would not produce such a huge power, let alone make the victims and survivors "not hang an inch".

Overall, the explosion of the powder magazine was not the main factor, it was a catastrophe caused by a sharp drop in air pressure.

The cataclysm has the phenomenon of "no burning of wood" and "no trace of burning", that is, the so-called cold explosion effect, which is the same as the "low-temperature" explosion phenomenon of corn flowers, and there are no red-hot explosion centers and radial explosion traces.

But what is the cause of the drop in air pressure?

Judging from the phenomena such as roaring, chaotic silk, five-colored, and Ganoderma lucidum smoke rising into the sky, it is believed that the air mixed with combustible gas exploded, which in turn caused the air pressure to drop.

What needs to be further explored is, where does this combustible gas come from when it is mixed into the air?

Historical records have such records: after the explosion, someone found two deep cracks in the flat ground in Wang Gongchang, the center of the disaster, which were several zhang deep, and there was an endless thunderclap in the ground.

It can be assumed that for some reason, cracks appeared on the surface of the earth, causing combustible gases such as biogas and natural gas to leak out and mix into the air.

These combustible gases drift away with the wind, forming strip-like gas bands, which are detonated when they encounter open flames when they float to the northeast for 3~4 miles. The explosion was carried out from the periphery to the center of the gas source, so that the sound was heard from the northeast to the southwest corner.

Due to the deep crack of the underground gas source, the limited contact with air, and the explosion of the rift, the gas source was cut off after the explosion, and the secondary explosion did not occur. However, the crack **** continued to blow on a small scale, until the earth and rock that was knocked down by the explosion collapsed and blocked the crack.

Some modern scholars believe that Wang Gongchang is located in the axis of the Beijing depression, and the underground is rich in oil and gas, and it can completely overflow the surface through faults when the earth's crust is active.

The time of the earthquake in Miyun County, located in the northeast of Beijing, coincided with the explosion time of Wang Gongchang, and there were also precursors before the earthquake in the city, with strange phenomena such as clouds, fires, fluorescents, and strange sounds.

There are various indications that on the eve of the explosion at Wanggongchang, there was indeed an earthquake in the Beijing area, but the subsequent explosion caused people to pay attention to the faint earthquake.

To sum up, at that time, there were cracks on the surface of the Wanggong factory in the capital due to the earthquake, and the biogas and natural gas contained in the ground overflowed, mixed with the air to form a belt-like combustible mass, which drifted to the northeast corner of the city with the wind, and exploded in case of fire.

The shock wave from the explosion uprooted patches of trees, and even a 500-kilogram stone lion on Shifuma Street was lifted out of the Shuncheng Gate with the air current.

As a result of the low air pressure generated by the explosion, a cold explosion effect occurred in the explosion area. At the center of the explosion, 10,000 rooms were flat, tens of thousands of houses, and more than 20,000 people were shattered; At the edge of the explosion zone, rare features such as the decomposition of human limbs and the loss of clothing appeared.

Although this may not be the real situation, according to various sources, this should be the truth of the catastrophe in the capital of the Ming Dynasty.