The world is changing dramatically every day, due to the existence of a 100-meter steel wall, a large number of human beings continue to pour into the three major capitals, the imperial capital as the only remaining city in the most densely populated capital economic circle, in just three months after the opening of the capital, the population has exceeded the limit of carrying capacity, and even the grain planting area that reaches the general area of the imperial capital is occupied by civilians who have come to flee.

The area of the imperial capital is the largest among the three major capitals, and after the land carrying capacity of the imperial capital reaches its limit, the relatively small demon capital and the demon capital have also reached the limit one after another.

Just when the major forces in the capital are worried about the population explosion, the evolved beasts are also constantly threatening the living area of humans, wave after wave of beast tides continue to threaten the steel wall, coupled with the threat of powerful bird evolutions in the air, whether the 100-meter steel wall can become the last guarantee for human survival has become a concern for the existing human beings.

Each attack of the beast tide will cause damage to the wall of steel and cause the death of a large number of source warriors, and the bird evolution in the air will directly threaten the safety of the humans inside the wall.

The entry of civilians into the city, the lack of land carrying capacity, the damage of the city walls, and the attack of the beasts have become problems that must be solved by the super power controllers of the three capitals.

Finally, after nearly half a year of research and experimentation, the imperial capital experimented with a new technology called "nuclear power ion wall" before a large-scale beast tide arrived.

The nuclear power ion wall is a kind of energy wall, which is covered on the surface of the steel wall after nuclear power is generated by the nuclear ion cannon, which greatly improves the defense capability of the steel wall, and the nuclear power ion wall can also form an air protective cover.

After the nuclear power ion wall technology was developed, it was immediately shared with the Demon Capital and the Demon Capital under the protection of the advanced Source Priest and a large number of thermal weapons.

Although the birth and application of the nuclear ion wall can greatly improve the defense of the steel wall and protect the airspace of the capital, the continuous invasion of beasts and the explosion of population still plague the three capitals.

In the end, the demon capital that was the least attacked by the beast tide took the lead in formulating the urn city plan, and under the advancement of a large group of powerful source warriors and thermal weapons, all the beasts and mutants hundreds of miles away from the demon capital were strangled, and finally the demon capital lasted three months, and the loss of thousands of source warriors established four urn cities in the four directions outside the 100-meter steel wall.

The area within the steel wall of the magic capital is 6,000 square kilometers, and the grain planting area and meat breeding area occupy nearly 3,000 square kilometers, and each urn city built today has an area of 500 square kilometers, and the four buildings add up to nearly 2,000 square kilometers, which can fully meet the deployment of combat power and share the population pressure during the defense counterattack.

However, there is a very obvious shortcoming in the urn city, in order to create a more favorable terrain in the defense and counterattack, so the steel wall surrounding the urn city is only fifty meters high, although it is also equipped with a nuclear power ion wall and a powerful nuclear power ion cannon, but at this stage, there has been a giant ape with a height of about ten meters, and it is inevitable that there will be more giant beasts and even plant evolutions in the future.

Urn City is an important deployment place of the Demon Capital, and even occupies 500 square kilometers, so it is also a place where the major forces must fight, and finally under the mediation of the major forces, the city lord of the Urn City will implement a rotation system, and the term of office of each Urn City City Lord is one year, and the twelve super forces of the Demon City will send a high-level powerhouse to serve as a candidate city lord.

The four major urn cities will be stationed in nearly fifty percent of the source soldiers and troops of the magic capital, and the personnel stationed there will also implement a rotation system, and the stationing period will be the same for one year.

Although the replacement of the garrison greatly reduced the population carrying capacity in the main city, under the discussion and resolution of the major super powers, the apocalyptic resident point system was formulated with reference to the resident management regulations of the peacetime era, and the humans who meet the points will continue to stay in the main city of the demon capital, and those who do not meet the points will be allocated to the urn city with a low level of security.

Due to the fact that the Urn City is at the front of the battle line, the height of the Steel Wall also makes the Urn City less safe than the main city, so a large number of civilians are actively involved in various city construction, in exchange for points, which is conducive to the rapid completion of the third steel wall in the Demon Capital.

In the end, the imperial capital and the demon capital also borrowed from the urn city plan of the demon capital, which could not help but reduce the pressure on the population, stabilize the social order, and even improve the survival power of the civilians in the last days, the most important point is that the urn city plan greatly reduced the defense pressure of the main city, and well guaranteed the safety of the main city.

Following the establishment of a 100-meter-high steel wall in the three major capitals of China, the defense circle jointly established by Xindu and Hong Kong also built the first 100-meter steel wall with the support of the demon capital, and the scale is even comparable to that of the demon capital

Subsequently, the eight major cities of Xijing, Jinling, Jincheng, Zangcheng, Shancheng, Jiangcheng, Bingcheng, and Wucheng also established a 70-meter-level triple steel wall with the support of the four major capitals, and built a 30-meter-level Wengcheng city in imitation of the urn city plan.

A year has passed since the evolutionary frenzy, and the world has stepped into the last two years under the sighs of humans and the roars of orcs.

No matter how the outside world turned upside down, in the small hills outside the demon capital, Tang Feng and the others still lived a life of cultivation in isolation.

In this year's time, there were four source force cyclones on the small hill, and each time the number of source force cyclones was more than seventy layers, all of them were the number of cyclone layers at the level of the Holy Son and Holy Maiden in the Holy Clan, and such exaggerated cyclone layers were not discovered by the outside world under the protection of the stone spirit's phantom array.

When Xing Peng and Li Kun entered the ranks, the number of source force cyclone layers even exceeded the ninety layer, Xing Peng reached the ninety-second layer, and Li Kun reached the ninety-first layer. Even Lin Feng had reached an astonishing eighty-six percent, and Li Qing had also reached eighty-two layers, and Shi Ling was almost in a state of panic during the year, fearing that this ordinary hill would be discovered by the powerhouses of the Ten Thousand Domains.

Tang Feng and the others also left the small hill many times in the past year to go to Buddha City, and even Linjiang City, which is far away, in order to grasp the dynamics of the world today and understand the recent situation of the Lan family.

On the day of the opening of the demon capital, the Lan family was led by Lan Feiduan to enter the capital with nearly seventy percent of the Lan family's combat strength and half of the population, including the commander of the escort army, Meng Kuo and Lei Shan, and the deputy commander of the escort army, Xiaolin, guarded the Lan family city.

In the middle of the last year, the Lan family relied on the strong strength of Meng Kuo, Lei Shan and others to defeat competitors repeatedly, and finally succeeded in occupying a territory with an excellent geographical location in the inner circle of the demon capital.

After the Lan family acquired the territory in the demon capital, they immediately squeezed into the ranks of the big forces in the demon capital through energy optimization technology and the combat power of Meng Kuo and other key personnel, and Meng Kuo also lived up to expectations and became the first advanced source scholar of the Lan family, and when he entered the ranks, he condensed the fifty-three layers of source power cyclone. With the emergence of the Lan family, its position in the demon capital has become more solid.

After the Lan family entered the capital, Tang Feng was always concerned about the safety of Lan Feiduan, after all, the demon capital Crouching Tiger, Hidden Dragon. After the evolutionary frenzy, almost every major force has the existence of a Rank Origin Scholar. However, as the Lan family's power became more and more stable, Tang Feng also put his mind at ease and continued to devote himself to cultivation.

Just when Tang Feng and the others were about to continue to stay in the air-raid shelter to cultivate and live, a piece of news broke everyone's peaceful life, that is, Lan Fei Duan was ready to enter the ranks.