In the distance, the sky was shaking, and black holes appeared one after another, connecting the unknown places. Among them, there was the roar of monsters, which was as turbulent as the rolling waves.

Taking the main city as the center, endless fierce monster breath began to emerge in all directions. Massive monster breath filled the sky, just like a vast ocean. Closing your eyes, it was like a person facing the boiling sea.

With the upgrading of the barracks, the number of monsters is increasing and getting stronger every time. By the time we upgrade from level 5 to level 6, all the monsters are above level 50. If these monsters are allowed to attack for an unlimited period of time, no matter how powerful the main city is, it will be destroyed. Fortunately, the time for monsters to attack is only half an hour, and the main city is well prepared, Not at all.

If the endless monster wave is the vast sea, then the main city is the rock rooted in the earth at this time, let the endless monster wave impact lingran fearless.

"Started..." with the roar of a monster in the sky, Tang Tian said to himself.

At the next moment, in the black hole in the distant horizon, endless monsters began to roar, surging out, just like a sluice reservoir, the earth was shaking, the sky was distorted, and the endless monsters roared and rushed to the main city.

Under the general trend of heaven and earth, tens of thousands of troops in the main city raise their heads to heaven and cry out. They are full of enthusiasm and fighting spirit. Their weapons come out of their scabbard and they fight with each other. They want to fight immediately.

Roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar, roar!

The impact of the vast animal tide is always so magnificent and terrifying. For people who have experienced many times in the main city, they have been able to accept it calmly. For people who have not experienced it or who have only experienced it once, all these are undoubtedly despairing.

The tide of beasts represents the destruction and smashing of everything in the last world. How many forces and human beings have been trampled to pieces under the terrible tide of beasts? How many lives die?

The earth is shaking. No matter how far the distance is, it's not too far for these monsters who are up to level 50. Dozens of seconds later, they begin to fight each other, and the alien groups outside have started fighting with the monster wave.

All of a sudden, there was a roar, blood splashing, limbs and arms dancing, and the earth was shaking.

On the ground, the endless mutant animals are surging like the waves of the sea. In the sky, the endless flying mutant animals are covered like the sky curtain, shielding the sun.

Hum... The three-level array above the main city really burst out an extremely dazzling cyan light, swept away and turned into an endless storm, tearing up all the flying mutant beasts who want to get close to the main city.

Three level array, always firmly guarding the main city, has not been broken.

"Kill...", endless cries in the army, suddenly a self-sustaining strong people all rushed into the front line, this is an opportunity to hunt mutant animals, improve themselves.

It's a battle without any suspense. It's impossible to break through the defense line of the main city at the mercy of endless monsters. Here, like a huge meat grinder, it devours a large number of monsters' lives, and there are endless mutant animals buried here every moment.

The blood was flowing, and soon gathered into a bright red river, flowing along the low-lying places, the bones were piling up, getting higher and higher, and finally formed a hill like pile of bones.

One minute later, ten minutes later, monsters can't break through the defense line. Fifteen minutes later, powerful monsters appear one after another, including leader level, boss level, King level, general level, and even dark level monsters. These powerful monsters naturally have powerful humans or strong people of other races to kill them, and they are firmly blocked out of the defense line.

In the history of people's cognition, a battle may take ten and a half days or even one year or two years to devour hundreds of thousands of lives. However, in the battle of the main city at this time, hundreds of thousands of lives may be buried here every minute. Here is simply a graveyard of doomsday. Life here seems too fragile.

"Twenty minutes later, the most powerful monsters are only the dark level, and they are very few. Even the monsters of the big demon level don't appear. Can we say that there will be no monsters beyond the big demon level in this battle? The existence of the half step top should hardly appear, "Tang Tian, who was inspecting the whole battlefield in the sky, said to himself.

The monster can't break through the defense line, and there is no monster that can crush everything. Naturally, it doesn't need Tang Tian to fight.

In this battle, almost everyone knows that there is no suspense in this battle, which ends with the victory of the main city, so they are trying to show themselves.

In this vast battlefield, Tang Tian saw that too many alien strongmen rushed in front of them to kill these monsters like them, such as variation wolves as high as mountains, variation snakes as big as dragons, variation birds as big as airplanes, and so on. These powerful alien strongmen rushed to the front line and acted extremely fierce.

They belong to the main city, but in the final analysis, they are just alien. They can never be in the same position as human beings forever. At most, they are the strong ones among these alien races. Only when they evolve into human beings can they have a certain say. If they want to improve their position in the system of the main city, they have to make great contributions to let the high-level of the main city see and enter the eyes of the marquis, Only in this way can we improve our status and discourse power.

So, in this battle, the alien strongmen showed extraordinary hard work.

In this battle, there are a lot of existence, such as the tree clan. Under the leadership of Lao Liu, they are rooted in the earth, but the monster tide is killed by these tree clan who don't know how to move, and becomes the nourishment.

Lao Liu, in particular, incarnates into a huge willow tree standing in the sky and the earth. The willow branches fall down and radiate the green glow like a magic chain. When they radiate away, they are like a meat grinder, smashing everything. Even the dark level monsters of general level have no resistance in front of him. They are torn up by the willow branches like a magic chain, and the sky is stained with blood.

There are also the stone clan led by the stone emperor. These guys are huge and tough. They turn into ferocious beasts. They rush to kill in the tide of monsters, tearing up the mutant beasts and smashing them into meat mud, which is bloody.

Especially the stone Emperor himself, he didn't turn into noumenon, but existed in the form of human beings. A dark axe appeared in his hand. Under the sweeping, a terrible light diffracted, tore up the space, swept out in a mighty way, and all the mutant animals along the way were torn up.

Half step top of the strong, in this battle, it is a moving nuclear bomb, mercilessly devouring any dare to invade the main city of the monster.

However, although they are powerful, the number of monsters is too much, even if their every move can crush the impact of a large number of monsters, but for the vast wave of monsters, it is still just a small water flower, which can not play a decisive role at all.

Although they are strong, if they are only them, they will be torn up by the endless tide of monsters. After all, the fact that ants kill elephants is still the truth.

In addition, when Tang Tian looked around the vast battlefield, too many people were very prominent. The figure of the former leader of the cult was like the incarnation of a God. In the wave of monsters, he was shining with silver brilliance, his staff was held high, and a mutant beast was killed,

These people, like a statue of scorching sun, rush to kill in the tide of monsters, tearing up a mutant beast, killing heaven and earth shaking.

Lin Tiandu and others are the same. The place they pass is sweeping, and Zhang Yu, once a timid little girl, is fighting alone in the tide of monsters. The dark box turns into a terrible mechanism gun with a length of more than 30 meters. The gun barrel roars, and the bullets pour like a torrent, tearing up a mutant beast.

Li Haotian, a little fat man, has also grown up. His round body rushes among the monsters. When he is patted with a fleshy palm, pieces of mutant animals are smashed. Among them is the enchanting Sanniang, who has a rotten kitchen knife in his hand. Even in front of her, the powerful mutant animals are torn in two.

Too many, too many people have grown up and become independent. These 50 level mutant animals are as fragile as babies in their hands.

Among these people, Zhao Yueer, who opened up a sea of Qi not long ago, is the most outstanding. They are just sweeping and crushing all the way, and the monsters are often torn apart without even seeing their appearance.

Among them, Zou Jun rushed to the front line, summoning a Western giant dragon with a body of 1000 meters long. His cold scales were extremely tough, tearing up a mutant beast.

There is also Zhao Daniu, the second skill of humanity, the fourth phase of heaven will crush everything. Under the fury of the water god, it is like the tide of the sea, crushing all the monsters within several kilometers around.

And Zhao Yueer, after opening up the sea of Qi, found a lot of things to increase Qi in the inventory of the main city. This rush was on the first line, just like the wind devil. The sword swept out a terrible light, tearing up the monsters along the way, and was not afraid of consumption.

In this battle, too many people are breaking out their own amazing brilliance, in the number of their own legend, this is a battle without any suspense, the monster is just a ladder of human promotion, there is no obvious wisdom at all, the army only needs to form a battle line to take care of each other to be able to fight out.

In the end, the whole battlefield was boiling. Under the leadership of powerful existence, the alien troops and human troops in the main city were gradually fighting back, showing their advance towards the distance!

Never before has the battle of upgrading the barracks in the main city been so easy!