Inside the New Earth spacecraft, after seeing off the leaders of various countries who had come to attend the secret meeting, Chen Xin boarded a rail train and secretly came to a large warehouse in the center of the spacecraft.

The warehouse is not big, the length, width and height are about 20*10*10 meters, and in the center is a metal ball with a diameter of about two meters, and there is nothing else?

After Chen Xin entered the warehouse, his eyes focused on the round metal ball.

The surface of the metal ball has a silvery-white sheen and is extremely smooth.

Yang Lin walked to the metal ball and looked at his watch, according to the agreement between him and Gang Jump, it should be about the same.

Two months ago, when Yang Lin took over this spaceship from Leah, he also obtained more than 1.8 million special materials that could upgrade the steel hammer to a third-level civilization.

When Leah and the others left, the steel hammer went to the metal warehouse, feasting on the materials.

It ate for almost a month before it filled its stomach with most of the ingredients.

Subsequently, the steel hammer told Chen Xin that it would gradually fall into a deep sleep, and it could be upgraded after digesting the materials it ate into its stomach, and this time would last for about a month, and today was the last day that the steel hammer and Chen Xin said.

Chen Xin stretched out his hand and gently stroked the surface of the metal ball, and at this moment, he heard a crisp click, and a crack suddenly cracked on the surface of the metal ball.

Chen Xin was slightly stunned and took two steps back.

The crack gradually spread out in the shape of a spider's web, and then quickly spread all over the body.

Click-

A metal fist slammed through the metal shell and emerged from within.

Then, click-click-

The entire metal ball shattered completely, and a one-man tall man came out of the metal ball, and it looked like a steel hammer.

Chen Xin was dumbfounded, and asked tentatively, "Steel hammer?"

A blue glow flashed in the electronic eyes of the machine. Quack laughed and said, "Old Bean, I succeeded!"

Chen Xindao: "You said you were promoted to the third level, how did you become like this?"

Gangyi looked down at his new body and said, "Old Bean, wait a minute." ”

As he spoke, it gently hugged its two hands into a ring, and in an instant. The metal shells scattered on the ground slowly floated, and the steel hammer opened its mouth, and the metal shells flew into its mouth as if attracted by something.

In less than a minute, all the metal shells on the ground disappeared.

burped, waved his fist and said, "I finally feel the strength again, it feels so good to upgrade!"

Chen Xin looked up and down at the steel hammer, and said suspiciously: "Steel hammer, is this your true form?"

"Not really!"

The steel hammer chuckled. In an instant, its body shrank, and it regained its form as a small machine, and then, it jumped on Chen Xin's shoulder, and then jumped forward with a somersault, quickly turning into a cool and abnormal Lamborghini sports car, and then, the sports car transformed again. It became an Apache gunship, and then the Apache became an F22.

Chen Xin was stunned from the sidelines. muttered, "Transformers!"

"Old Dou, what are you still doing in a daze, hurry up!"

A hint of excitement flashed on Chen Xin's face, and he hurriedly boarded the fighter plane transformed by the steel hammer.

The top of the warehouse slowly opened, and a long corridor appeared.

The fighter floated silently, then turned the nose around. Flew out along the long corridor.

The core of New Earth is a sphere with a radius of one hundred and fifty kilometers.

In this 150-kilometer sphere, the core 10-kilometer range is dominated by positive and antimatter annihilation reactors, curvature engines, and flight command and control centers.

The rest is a super-large industrial base made up of billions of machines.

The machine qì people were added at Chen Xin's strong request, and are currently in the Carbon-Based Life Alliance and the Silicon-based Life Alliance. Basically, the production and research and development of the machine qì people were banned, and it was Yang Lin who repeatedly assured that there would be no problems with these machine qì people, and Leah persuaded the top management of the carbon-based statement alliance to agree to build the shells of these machine qì people according to the drawings given to them by Chen Xin.

As for the intelligent core of these machines, they will have to be solved independently after the steel hammer is upgraded to a third-level civilization.

The survival of these machines will provide strong support for the industrial construction of human civilization in the coming decades.

As soon as there was a faint light in front of him, the F22 fighter jet transformed by steel hammer flew out whizzing along the corridor and directly entered the twentieth layer of the human ecosystem.

This layer of the ecosphere is the smallest, only about 300,000 square kilometers, but the scenery is stunning, more than half of which is the water area, and the rest is forests, mountains, and grasslands.

From white sand beaches to snow-capped mountains, from grassy grasslands to misty forests, from traditional oriental landscapes to high-altitude mountains with a western flair, from volcanic lakes to cold polar ice fields.

The fjords of Norway, the hot spring towns of Japan, the Yellowstone National Park in the United States, and the Jiuzhaigou in China......

Basically all the famous scenic spots on the planet have been transplanted into this layer of the ecosystem, and what is even more amazing is that these completely different climatic environments have formed a perfect balance in such an ultra-small atmosphere.

In short, anyone who comes to the 20th level of the biosphere will be attracted by its different scenery, and in the future it will be open to all humans as a resort, and of course, there will be a large number of sanatoriums and various scenic towns. These towns are mainly for scientists and their families, and Chen Xin also has his own place to live here.

At this time, in a manor near a high-altitude snow-capped mountain, Qiao Lao was sitting in the courtyard with several of China's top scientists, drinking tea and chatting.

The estate is located at the foot of the snow-capped mountains where the alpine grasslands meet the coniferous forests, surrounded by lush grass and forests, and not far from an alpine lake sandwiched between cliffs.

The lake is long and narrow, about 500 meters wide and thousands of meters long, and hundreds of meters deep, and on the shore of the lake, there is a pier on which wooden boats and a small sightseeing submarine are docked.

Qiao Lao was talking to those scientific giants when he saw an F22 swooping down from the sky silently, and when it was about to touch the ground, the F22 hovered steadily at a height of five meters above the ground, and then slowly descended.

Everyone's eyes were suddenly attracted by the sudden appearance of the fighter jet, the cockpit canopy opened, and Chen Xin jumped out of the cabin.

The fighter quickly left the ground and left on its own.

Chen Xin didn't care about the steel hammer, walked over with a smile, nodded at Qiao Lao, and said, "Grandpa!"

Then, he smiled at the three people present and said, "Hello Grandpa Chen, Grandpa Li, Grandpa Xu!" (to be continued......)