After the water tribulation, it is the earth tribulation, which appears the attack of all kinds of elemental soil, and after that, the appearance is the wood tribulation, and the attack of various wood attribute elements appears, and these tribulations are still ninety-nine eighty-one.

After the wooden robbery, there is the golden robbery, also known as the military robbery, the appearance of a variety of weapons attack, this robbery is powerful, the appearance of a variety of metal weapons attack, some are the history of a variety of very famous weapons of the attack, some of which are those fictional, very powerful weapons of the attack.

For the attack of these weapons, Tang Mu shouted: "It's good to come!" ”

Just because, the weapons that these golden tribulations turned into were very big supplements for Tang Mu's Heavenly Summoning Treasure Book, which was a very big supplement, so Tang Mu used the Heavenly Summoning Treasure Book to devour these ninety-nine eighty-one heavy weapons, making the treasure of the Heavenly Summoning Book even deeper.

After the Golden Tribulation, there is the Wind Tribulation, and the wind here has the Nine Heavenly Gang Wind, the Hongmeng Taichu Wind, and the Chaos Infinite Wind...... and other powerful storms, one storm is stronger than the other, even Tang Mu's main god clone has spent a lot of strength to resist this catastrophe.

After the wind tribulation, it was the Yin and Yang Tribulation, this calamity, the Yin and Yang elemental attacks came together, exceeding the power of the Wind Tribulation, this time the calamity, Tang Mu was injured, although it was only a minor injury, but it was also injured, which shows the strength of this time the Tribulation.

After the Yin and Yang Tribulation, it is the humanoid Tribulation, and what appears in front of Tang Mu's main god clone is the supreme heroes left by the long river of history throughout the ages, these heroes, each of them is a talented demon, and the cultivation realm is not worse than Tang Mu's main god clone.

As a result, Tang Mu encountered the siege of Tianjiao throughout the ages.

However, although these Tianjiao throughout the ages are all heroes, the earth before the end of the world is not an elemental world after all, so although these Tianjiao heroes are powerful, they also have flaws.

Moreover, the strength of the proud heroes these days has been greatly limited, so in the end, it was Tang Mu's main god clone who won the victory.

After killing these proud heroes, absorbing their Dao fruits, experience, and energy, Tang Mu's main god clone became even more unfathomable, and in the process, suddenly, Tang Mu's main god clone erupted with a powerful aura, but it was his main god clone that broke through.

After breaking through, Tang Mu's main god clone suddenly became a ninth-order powerhouse.

The strength of the ninth-order powerhouse made Tang Mu's main god clone, at this time, be able to sense everything on the earth in an instant, and come out of a very small number of special regions, basically, the earth is very few secrets for Tang Mu at this time.

At the same time, at this time, Tang Mu's main god clone really sensed the structure of the earth after the end of the world.

After the end of the world, the earth is still a huge sphere, but this sphere is inducted by Tang Mu's main god, and from the outside, the enhancement of the earth is not large, and the change is not great.

But after the end of the world, the earth has undergone earth-shaking changes internally.

At this time, the earth is divided into many levels, and the levels that Tang Mu's main god clone can sense are many, but they are not all the levels of the earth.

Tang Mu's main god doppelganger, he sensed the structure of the earth at this time, the world on the ground, and became the surface world, also known as the main world, and under the main world, there was a layer of underground world.

The underground world is more than half deep into the earth, and these underground worlds are their own space worlds, so they are very vast, under the underground world, leading to the center of the earth, Tang Mu's main god clone is estimated to be below, there is an alternative world, but that world is sealed, and Tang Mu can't sense the situation inside.

This is just a sensing situation from the surface of the earth towards the center of the earth.

In addition, Tang Mu can also sense from the surface to the sky, the sky above the surface, the so-called atmosphere, has changed very much.

The pre-apocalyptic Earth's atmosphere starts from the surface and can be divided into five layers: troposphere, stratosphere, mesosphere, ozone layer, and ionosphere.

The troposphere is the lowest layer of the atmosphere, close to the Earth's surface, and is about 10 to 20 kilometers thick. The atmosphere of the troposphere is greatly affected by the earth, and phenomena such as clouds, fog, and rain all occur in this layer, and water vapor is almost all present in this layer. The temperature of this layer decreases with the increase of altitude, and the temperature drops by 5~6°C for every 1000 meters of elevation. The survival of animals and plants, and most of the activities of human beings, are also in this layer. Because the air convection in this layer is obvious, it is called the troposphere.

Above the troposphere is the stratosphere, about 20 to 50 kilometers above the Earth's surface. The air in the stratosphere is relatively stable, and the atmosphere flows smoothly, so it is called the stratosphere. There is very little water vapor and dust in the stratosphere, and below 30 km in the stratosphere, the temperature is around -55°C.

Above the stratosphere is the mesosphere, about 50 to 85 km above the Earth's surface, where the air is already very thin, characterized by a rapid decrease in temperature and high altitude, and strong vertical convection.

Above the mesosphere is the warm layer, about 100 to 800 kilometers above the Earth's surface. The most prominent feature of the warm layer is that when the sunlight shines, the ultraviolet rays in the sunlight are absorbed by a large amount of oxygen atoms in the layer, so the temperature rises, so it is called the warm layer.

The fugitive layer is on top of the warm layer and is made up of charged particles.

In addition to this, there are two special layers, namely the ozone layer and the ionosphere. The ozone layer is located 20 to 30 kilometres above the ground, effectively between the troposphere and stratosphere. This layer is mainly caused by the actinization of oxygen molecules by the ultraviolet rays of sunlight, which turns the oxygen molecules into ozone. The ionosphere is thick, about 80 kilometers above the Earth's surface.

The ionosphere is a gas in the high air, irradiated by the ultraviolet rays of sunlight, ionized into charged positive and negative ions and some free electrons. The ionosphere has a great influence on electromagnetic waves, and we can take advantage of the characteristics of electromagnetic short waves reflected back to the ground by the ionosphere to achieve long-distance communication of electromagnetic waves.

The earth after the end of the world is also divided into five levels, namely the level close to the ground, called the surface layer, this layer, its height looks similar to the earth before the end of the world, but its height is not comparable to the earth before the end of the world, reaching 129,600 kilometers.

At the next level, Tang Mu sensed that it was a continent layer of its own world, in this world, countless white clouds floated, and between these white clouds, countless continents were formed here, forming a piece of floating continents, the height of this layer looks similar to the height of the earth's stratosphere, but its actual height is 129,600 kilometers.

Because of the perception of countless floating continents, Tang Mu called it the continental layer, Tang Mu guessed that this layer of the world is estimated to be one of the main plane worlds formed by mutation in the stratosphere of the earth before the end of the world.

(End of chapter)