Looking at the mountains of ore, Chen Zheng couldn't help but roll his eyes. He forgot to tell the glasses man about the earthen blast furnace.

"Follow me." Chen Zheng brought a man and a girl with glasses to the scene of his copper smelting.

After the last furnace of copper ore was smelted, Chen Zheng had already cleaned out the slag and repaired the inside of the furnace, and now he only needs to refill the charcoal and ore to smelt the copper water.

"Wow...... It's a rare sight...... You made it? The girl looked at the towering clay furnace and exclaimed, looking up and down around it.

Chen Zheng even suspected that if she had brought her mobile phone, she would have taken it out to take pictures and send them to Moments.

“…… This is? "The man with glasses doesn't know what it's for.

"The blast furnace, though a bit rudimentary." Chen Zheng explained.

"Blast furnace?"

"You never used this thing to smelt metal?" Chen Zheng tilted his head and asked.

"Hmm." The man in glasses nodded honestly, "I've never seen it." ”

Chen Zheng sighed, and had to explain how to smelt copper.

"You mean, just throw in charcoal and ore, and keep blowing the air...... You can get copper!? ”

When Chen Zheng finished speaking, the girl came back at some point, and stood aside and interjected.

"It's hard to believe...... How can such a rudimentary thing smelt metal? When she saw Chen Zheng nodding, the girl became more interested in this blast furnace.

On the other side, the man with glasses fell into deep thought.

“…… Superheated carbon reduces metal oxides, and most of the impurities are filtered out through the charcoal layer after the metal melts...... The principle is very simple, but it is difficult to think of...... The man who invented this blast furnace was nothing short of a genius! ”

The man with glasses exclaimed.

"In such primitive conditions, even gravity is used, and this line of thinking is simply ...... It's ...... Incredible! ”

"As for it?" Chen Zheng sighed, pointed to the carbonization pool not far away and said, "Come on, let's fill the carbonization pool first." ”

Time slipped away in the hustle and bustle.

With the help of a few people, especially the existence of BT-7274, a "super strong laborer", Chen Zheng's progress suddenly became much faster.

In the past, when he was trying to survive alone, a lot of work needed to be done by himself, wasting time and physical strength but having to do it, but now these crude benzene messengers don't need Chen Zheng, he just has to say it.

When night fell, Chen Zheng ran to the "refrigerator" area and picked up a thick piece of fish and brought it back - he really couldn't stand the alien food that looked like rice porridge with paper.

"What are you going to do?"

Just as Chen Zheng was packing up the fish and meat, a girl's voice came from behind him.

"Cook." Chen Zheng said without looking back, put the cut fish meat on a wooden stick, brushed the sea salt and put it on the fire.

"It's ...... What animal meat? ”

Looking at the slightly red pieces of fish meat, the girl couldn't help frowning.

"Fish." Chen Zheng said without being salty or light.

"You actually eat such a thing of unknown origin, and you are not afraid of infecting parasites?"

“…… Would you like to try it? Chen Zheng raised his eyebrows.

"Just! No! Want! I don't eat corpses of unknown origin. The girl shook her head, "It's unhygienic, it's not healthy, fermented food is enough to satisfy physiological needs, why kill other lives?" ……”

Let's go it......

Chen Zheng ignored her, carefully turning over the fish, brushing some salt water from time to time to prevent baking.

The tongue of fire kept licking the fibers of the fish, and the white flesh gradually turned yellow...... After a while, the smell of burnt fish wafted out.

“…… What a strange fetish, you earthlings eat like this? The girl still kept asking, "Lan Yin also used animal corpses to feed the earth?" It's really going back to life more and more......"

"Whew-"

The fat from the fish dripped, and suddenly a strange fragrance filled the girl's nostrils, making her swallow her saliva unconsciously.

"Gollum (swallow)...... Hey? Strange ......" The girl was stunned.

Chen Zheng took the roasted "sizzling" fish from the fire, tore off a small piece, blew it off and handed it to the girl's mouth.

"Taste?" Chen Zheng raised his eyebrows.

The girl looked at the steaming steam, scorched on the outside and white on the inside, trembling and steaming, and said incorrectly: "What is good about this backward and barbaric diet...... Not!? ”

Her eyes widened and she looked at Chen Zheng in disbelief.

Before the girl could finish speaking, Chen Zheng stuffed the piece of fish meat into her mouth.

When his fingers touched her lips, the soft touch made Chen Zheng's fingers tingle as if they were overpowered, and he couldn't help coughing a few times to hide it.

"Uh-huh-hmm The girl's little mouth was stuffed with fish, and her voice became muffled.

I saw that the girl's cheeks were bulging, and her cheeks were squirming like hamsters...... After a while, she heard a "grunt", and the large piece of fish meat was swallowed by her.

"How?" Chen Zheng had a faint smile on his face.

"What are you laughing at!?" The girl's face turned red.

"It's nothing, I just want to ask...... Is this barbaric and backward thing delicious? Chen Zheng asked maliciously.

"It's not delicious!" The girl glared angrily, and snatched the wooden stick in Chen Zheng's hand, "And you actually forcibly stuffed it for me!" You are not allowed to eat! ”

"Admit punishment." Chen Zheng raised his hands in surrender, and then concentrated on grilling a slice of fish steak.

The girl glanced at Chen Zheng sneaky, and quietly tore off a piece of fish meat and threw it into her mouth while he was not paying attention.

"Siha ......"

The fish is a little hot, and the girl instinctively inhales to increase the amount of ventilation and reduce the burden on the mouth.

After Chen Zheng brushed the fish with a layer of salt water, he suddenly felt that he seemed to be aware of the sound of Suosuo, and as soon as he turned around, he met the hamster-like girl with bulging cheeks.

"Hmm The girl glared at him.

"Delicious, right?" Chen Zheng asked with a smile.

"Gollum (swallow)...... It's not delicious! ”

"Hahahaha......"

"What are you laughing at! Don't laugh! ”

……

It was late at night, and the lights were still on in the marquee.

The glasses man and the other five people were busy nervously, and on the wooden board next to them, the charcoal writing of the mass and energy formula was placed in the most prominent position in the entire tent.

“…… Okay, adjust the next parameter according to the formula...... You ready? ”

The bespectacled man's voice rang out in the tent.

"Ready." The crowd replied.

"Whew......" The man with glasses took a deep breath, "Then let's ...... Here we go! ”

With that, he pressed the master switch.

Suddenly, the data stream, which is not visible to the naked eye, beats wildly on the display.

Chen Zheng didn't expect it, and neither did the man with glasses: a fortuitous explanation, a formula with only 5 letters and symbols, had a profound impact on Chen Zheng, for human beings, and even for all civilizations.

When the earthly civilization and the alien civilization first met, there were unimaginably beautiful sparks.

"Pass, pass...... It worked! We did it!! ”