It was not the first time Xiao Fan came to the wilderness area, but it was the first time he saw the earth from a high altitude. There was a green area everywhere. Except for a few dilapidated buildings, the ground was full of low shrubs, extending infinitely, and there was a vibrant scene everywhere.

In my heart, Xiao Fan couldn't help but sigh: "After the catastrophe, the spiritual energy in the world seemed much more vigorous than before, people's lifespan was longer, people's physical fitness was also improved, the air was fresher and greener, it was hard to say it was a disaster, or a return to nature at once."

According to many videos and books, before 2012, the land was seriously polluted and even the ozone layer was destroyed. With the increase in human activity ability and the tools used were also improving, humans began to know how to change the environment, turning large areas of barren mountains and grasslands into fertile fields, and the development of water conservancy provided a guarantee for the bumper harvest of agriculture.

However, behind its development, the contradiction with the environment is prominent. Due to uncontrolled deforestation and reclamation, severe soil erosion was caused, the destruction of grasslands led to the expansion of deserts, and unreasonable water diversion and irrigation caused the formation of soil salinization. The intensification of these contradictions once turned the prosperous ancient Babylonian civilization into a sandy wasteland, and also made the Mayans unable to withstand the invasion of drought, floods, wind and sand, and had to abandon the civilization they created with their own hands and leave their hometown——

According to statistics, about 17 million hectares of forests disappear every year due to deforestation and deforestation in the world; 6 million hectares of land lose their productivity due to desertification and soil erosion; more than 100 every day, and 50,000 species are extinct throughout the year; 1/15 of the world's population lives in water shortage, and 3 billion people are almost out of reach for clean drinking water; more than 5 billion tons of carbon dioxide, sulfur dioxide and chlorofluorocarbons are discharged into the atmosphere every year, and acid rain, atmospheric temperatures occur, and the ozone layer that protects the earth's organisms from excessive ultraviolet radiation are damaged. More than 6.5 million tons of garbage are dumped into the ocean every year, causing many fishing grounds to gradually disappear, and global fishery resources are facing depletion.

Unfortunately, people did not arouse alert and did not realize that this was a revenge of the environment. At that time, human productivity was not yet developed, and the damage to the environment was not obvious. Environmental problems had not yet reached the point where humans could endanger human survival, so humans still did their own things. In the industrial age, the situation had undergone fundamental changes. The productivity of human society, the number of humans, the scope and scale of life were no longer the same as before. The idea of ​​"man conquering nature" occupied people's minds. While humans transformed the environment, the damage to the environment was also increasing.

Industry causes a large number of mineral resources buried underground to be mined and invested in the environment. With the production and consumption of products, waste gas, waste water and waste slag are discharged. Many of the wastes are difficult to deal with and assimilate, causing unbearable harm to the human body and organisms. With the continuous accumulation of these harmful wastes, the environmental quality has gradually deteriorated and ecological balance has been damaged.

Industry also brings population problems, urbanization problems, and agricultural modernization have also derived many environmental problems. It can be seen that when humans play their positive role and create a high degree of material civilization, they also bring negative side effects to the environment. From the "black storm" in the United States in 1934 to the "artificial desert" in Inner Mongolia in the era of China's Great Leaping Initiative; from the London smoke incident in the 1960s, the photochemical incident in Los Angeles, the Maas Valley incident in Belgium, and even the rapid increase in the population of the world today, the sharp decline in forests, the hollows in the ozone layer, etc., a series of environmental problems, all of which are revenge by nature to mankind.

These are the concrete manifestations of the opposition between human beings and the environment.

All signs show that the deterioration of the human living environment has reached an unparalleled level. Humans have only one earth. If people do not have a sense of crisis and do not take action immediately, protect the environment, and treat the earth well, then humans will lose their only home. (Call us to protect the environment and never wait until the consequences described in the book appear before reflecting!)

However, for the sake of interests and for the sake of the masses, people are unsatisfied and have no reflection. In this way, nature has given humanity the most painful blow - the catastrophe of the Doomsday.

After breaking and building, humans finally tasted the serious consequences of destroying the bad environment in this catastrophe. After rebuilding a new home, they gave up the expansion of the throne and developed in the shield area with peace of mind. With the change of the environment, human physical fitness and life span have increased. Therefore, they can survive the raging of monsters. Perhaps, this is also a test of nature.

Sometimes Xiao Fan thought that there might be a god of destiny in nature that is really dominating all this. He punishes those who destroy nature, and at the same time favors those who contribute to nature.

Xiao Fan looked at the green and vibrant earth below, and infinite reverie emerged in his mind. People before 2012 probably had never seen such a scene. The endless green, the most natural and clearest feeling made Xiao Fan's mood improve. That feeling is something that can never be experienced in a palace and a villa, and that people living in a graceful and luxurious life cannot imagine.

The weather in June is the best season of the year. Various greens are crawling all over the earth, and some unknown small flowers and grass are swaying unscrupulously in the sun, as if showing off his smile.

"Wow, the scenery is so beautiful!" Sarud lay on the window, constantly admiring, looking in a good mood. Curator Lin Tianlai and chief instructor Yang Feng stared out the window with their eyes intently, with the corners of their mouths slightly raised, showing a smile. All of these fell in Xiao Fan's eyes. This was the first time he saw Curator Lin Tianlai laughing as pure as a child. That smile was from the heart, a sweet smile.

This is the influence of nature. If you stay in the world of reinforced concrete all day, many things are suppressed in your heart. Even the smile on your face is like cast by reinforced concrete. It is so stiff. Only when you are in nature can you feel the kind of releasing pressure and unscrupulous joy.

Soon, a building complex similar to a town appeared in the eyes of several people. There were tall buildings, spreading towards all directions with the Dragon King Tower as the center. What is surprising is that these tall buildings are not the reinforced concrete in human cities, but are square tower-shaped buildings made of blue bricks. There are a total of eight buildings, which occupy eight directions around the Dragon King Tower.

The ground was also paved with blue bricks, which looked very clean, simple and flat. Many trees between the brick buildings were preserved, and the green color was greater than the blue brick color.

"Is this the training tower?" murmured to himself, Xiao Fan and others exhaled in surprise.

Next to Qinling Mountain, the training tower is like a castle built on the mountain. From a distance, it looks like a child piled up with building blocks.

The training tower does not look big, with eight green brick towers in all directions, with the middle of the dirt Dragon King Tower and the outer edge of the city wall made of blue bricks, which is square, which is very in line with the castle in the minds of Chinese people. Looking down from a high place, you can see towering buildings and lush green, but you can't see a figure.

It is hard to imagine that such a strange castle would appear where the monsters are looking around. Not long ago, this was a Shura field where monsters kill each other.

Thinking of the tragic scene of that battle, Xiao Fan couldn't help but feel creepy now. The dead thousands of iron moon wolves gathered into a winding river. Even a layer of violent red shield appeared above Ganhe Town, which was formed by the evaporation of blood. Although he didn't know how the people from the Martial Arts Association cleaned up the corpses, it made people feel distressed just after they imagined it.

The UFO was getting closer and closer to the castle, and an alarm sounded immediately. The driver immediately stopped the UFO in mid-air. Xiao Fan saw that within a hundred meters of the castle, a huge semi-spherical light blue shield appeared.

"There is an energy shield." Lin Tianlai nodded and then looked at the driver and said, "Send an application signal."

"Ding--" signal was sent out, and the castle was accepted, and a response was made soon. An electronic voice sounded, "Identity verification is completed, and you can enter."

"Cultivators, welcome to the World Elite Martial Arts Warrior Training Tower." The welcome words are played repeatedly in standard Mandarin and English.

The UFO passed the verification, the alarm disappeared, and he successfully entered the training tower through the light blue energy shield.

Xiao Fan and others walked off the UFO and felt like they had entered a new environment. It was not like the city, where the sound of speeding cars were whistling everywhere, and there were traces of people coming and going everywhere. Because Chang'an District was next to Zhonghua City, and Zhonghua City was the headquarters of the Martial Arts Association, many rich people tried every means to live in Zhonghua City, and even in Chang'an District adjacent to Zhonghua City. Therefore, Zhonghua City and Chang'an District are the most populous cities and districts in the world.

Of course, the reason is very simple. The headquarters of the Martial Arts Association is sitting in the place, and the safety factor is definitely the highest. Tang Long, the world's most powerful man, guarded Zhonghua City, and even the powerful monsters dare not attack.

The quiet blue brick road is lined with lush green plants. You can see the shade of green within your eyes, and even many more precious plants, which are difficult to see in human urban areas.

Xiao Fan sniffed and felt that the air here was so fresh, and he felt that the shield here was different from that of human urban areas.

"Did you feel it?" Lin Tian asked with a smile on his face. "This place must be very different from the human urban area. The shield here is a level 3 shield, which is the lowest level shield, which can only block monsters below level 5."

The energy shield is divided into three levels, the highest level 1 shield, which can withstand the attack of level 9 monsters, and the level 2 shield can withstand the attack of level 7 monsters.

"Why is it not a level 1 shield? It's close to the Qinling Mountains, and there are countless powerful monsters--" Xiao Fan and Sarud looked at Lin Tianlai in confusion.

"Haha!" Lin Tianlai grinned and asked, "What are you doing here? Are you on vacation?"

"Uh--" Xiao Fan and Sarud twitched their lips, and a hint of embarrassment appeared on their faces.

"It's for training. Without pressure, how can you grow up quickly?" Lin Tianlai said in a deep voice: "Be careful when you sleep at night. Powerful monsters may appear to attack at any time. Stay alert at all times. This is not a resort, but a training tower. Instead, you must train you to fight against powerful dragons. Do you understand?"

"Yes!" The two of them turned slightly red and they nodded vigorously.

There are four major cities in the world, 12 districts, among which China City and Chang'an District are the safest. Apart from the struggle between the martial arts association and the mercenary organization, there has never been a situation where monsters have siege in the city.

It is because of Tang Long, who has the world's strength, power, and the status of the martial arts association is also the world's number one.

Under the cover of so many halos, those level 8 and level 9 monsters are very intelligent. How could anyone come to attack Zhonghua City and the adjacent Chang'an District?
Chapter completed!