One day after that, at noon.

With a lunch box in their arms, Lena and Shirley each lifted the heavy wooden door of the greenhouse and entered the exclusive greenhouse for the four of them.

"Little Cole, Katya, what's going on? Can we eat the winter snow and summer fruits today?"

The newly built greenhouse is twice as large as the first batch of greenhouses, not only the height is higher, but the width has also been greatly improved, so a greenhouse needs four or five people to take care of, the female knight who was in charge of the greenhouse was afraid that they had little experience with these little girls, and wanted to arrange two more old aunts to help them, but they refused, and they promised that they would do a good job.

Facts have proved that they do the best, not only the newly planted vegetables sprout the earliest, the growth is also the best, it can be said that the entire greenhouse area is the best greenhouse, because Rafa introduced the vegetable yield more than a certain value can get a gold coin reward decree, the surrounding aunts have come to the four sisters' greenhouse to ask for experience, they are also happy to teach experience, the women in the greenhouse area are very fond of these girls with different personalities.

However, this also caused them to have little time to do the experiments they wanted to do, so they could only take advantage of the fact that there was no "harassment" from the aunts when the cafeteria was open at noon, so they divided two people to cook, and let Cole and Katya perform their magic.

"Whew"

Seeing that Lena and Sydney had returned, Cole and Katya, who were squatting under a small tree, breathed a sigh at the same time, and stood up from under a small tree that was slightly shorter than them, which they had planted since they came here, but in just seven or eight days, it had grown to the height of their necks.

"Although the greenhouse built by the 'greenhouse lord' is very useful, it can't stand the harassment of these aunts in turn, unfortunately, we can't eat snow and summer fruits today. Katya helped a dizzy Cole to sit down on a homemade wicker chair and took the meal from Liana's hand and handed it to her.

As soon as the hungry Cole opened the lunch box, the hot air in her nose suddenly made her index finger move, "Wow, it smells so good!"

"Speaking of which, this greenhouse lord is really very generous, not only is he willing to use materials for the meal, but he also distributes a small cake to each person. Sydney handed Katya the lunch box in her arms and took out two hot cakes from her coarse apron.

The four sisters sat on their wicker chairs, eating happily, talking about what they had seen and heard today, and the sunlight above their heads, which was not too strong, sprinkled through the glass on the women's bodies, warm and very comfortable.

Seeing that the two little girls were well fed, Lena suddenly sighed a little, how long had it been since they had eaten like this before coming to Icefield City? Was it more than a year or three years? She couldn't remember it clearly, and she didn't want to remember it, because the time now is the most cherished.

"By the way, Lena, what the hell are you doing all day long in the west of the city?" asked Katya, who had eaten her lunch box cleanly.

"Oh, that's the ironwork factory, it's the place where ore is smelted and iron is forged. ”

"What kind of iron?"

"I know that!" Before Lena could answer, Sydney rushed to say, "I specifically asked what those people were talking about... Rebar, gears, and what parts like that. ”

"Rebar gears... What are these things for?" Katya was intrigued by these unfamiliar words.

"I don't seem to know exactly who the blacksmiths are, but I've heard that they were used to build houses. Lena continued with Shirley's words.

"Adding steel to the house, that wouldn't be the Greenhouse Lord's idea, would it?" Cole wondered, swallowing the cake in one gulp.

Shirley replied, "You guessed it, only the Lord of the Greenhouse, who was nice to us, could have come up with something so strange. ”

After that, the women chatted for a while, and finally got to work.

However, for them, the work of the greenhouse is very simple, and they don't even need to take care of it.

Katya stood behind a dense wall of vines, her arms outstretched, her expression becoming solemn, Cole standing at the end of the wall opposite her, looking equally calm, while Shirley and Lena stood guard at the doorway to prevent anyone from suddenly entering.

Katya breathed slowly for a while, and the air suddenly became damp, and the sunlight above her head could clearly see the small droplets floating in the air.

As she slowly lowered her hand, the moisture seemed to gather into a torrent that began to penetrate the roots of the vegetables, staining the soil a moist black.

When Katya stopped, Cole moved, and a faint green light emanated from under her feet, sweeping over every vegetable, and the vegetables touched by the green light seemed to come to life and stretched outwards as if they were trying their best, and the leaves and fruits were growing at a speed visible to the naked eye.

"Don't go too far, that's pretty much it. Seeing the rapidly growing vegetables, Lena hurriedly exclaimed.

"Hmm!" Cole replied, and the emerald green glow quietly dissipated, and everything was back to normal, except for fine beads of sweat oozing from her forehead.

"If this continues, we will definitely get that gold coin. Shirley let go of the latch that was tightly clenched, and went into the vegetable flock, and looked at a thick green leaf for a long time.

Katya sat back down in her wicker chair, "It's not necessarily a good thing, if we do too much and people see it, it won't be good." ”

"If only the lord of the greenhouse didn't dislike us, I like this kind of life, and I'm willing to grow vegetables for him for the rest of my life. Cole flicked a drop of water on a leaf and said wistfully.

"If you let those people know that the food they eat was grown by a witch, will they vomit?" Lena rubbed Cole's hair, as if trying to wipe all the nonsense out of her mind.

If Rafa had heard their conversation, he wouldn't have let them just grow for a lifetime, they should be of greater use!

It's just that he didn't have the heart to check the growth of the vegetables in the greenhouse, and he was hurrying back to the City Lord's Mansion from the steel factory at this time.

Before he could reach Felihill's lab, he shouted from afar, "Firi, Elle, come and see if this thing can be made?"

"How long is it going to go on? I don't have time to look at the drawings. Hearing Rafa's shout, Felihill walked out of the lab and looked at him coldly.

Rafa handed the blueprint to Felihill, "Ahem, apparently my business is a bit more of a priority, by the way, how did you do with the explosives package I gave you last time?"

"You mean the explosives used to blow up the mines, the ones used to open the mines?"

"Huh, I don't think you're about to forget, you don't forget to do it, do you?"

"I did it three days ago, but I have limited manpower and materials, and it's too powerful to use it for blasting holes. ”

"It's okay, there are only two places in the mine where big rocks block the explosives, and I have other uses for those things you make. ”

"Whatever you want. Felihill replied perfunctorily, unfolding the newly brought drawings, "What is this? Rails?"

"Elle, come here!" Rafa looked at Elle, who was forging gun parts in the distance, according to Philicon's request, I really didn't know why Phililiscille had arranged for her to make such things when everyone else was in full swing to make useful things.

"Hmm...... It's hard to look at. "Elle, who has seen a lot of firearms drawings, can basically understand the drawings drawn by Rafa.

"This is something I've wanted to build for a long time, but it's a pity that you've been overrun by Fili, and now it's my turn!"

Elle looked at him with a frown, "I...... How do you feel that this sentence seems strange..."

"Infinite power can replace a machine that transports ore by manpower?" Although the firearm attracted Felihill more, the thing in front of her that didn't need a firearm immediately attracted her attention.

"Hehe, I've ordered the blacksmiths to finish the parts, it's up to Miss Elle for your last step. Rafa beckoned, and Audair brought a staggering cup of strawberry sundae.

"Wow, I want, I want!" Elle hurriedly took the sundae and ate happily.

"You're obviously here for Elle, why did you call me by my name when you came?" Philicille looked up and stared earnestly into his eyes.

Rafa didn't know why her focus was so strange, and she suddenly lost her words, "Uh... Ahem, this... It's all the same, it's all the same..."

Later, with Felihill's approval, the knights brought in all sorts of strangely shaped parts.

"Yes, bend the patch over, stop, and seal the gap with flames. ”

Standing behind a partition in the distance, Rafa stuck her head out and gave Elle a command of control.

And Elle also looked at the face of the strawberry sundae, and didn't care about him, spewing a tiny transparent blue flame from between her fingers, gently touching the junction of the two steel plates, from the bottom to the top, meticulous and calm.

At this time, she is like an elegant pianist, the steel plate is her key, and the fingers are the notes, and when she finishes a song, a neat row of welding marks has formed at the junction of the two steel plates, and the two steel plates have been fused into one.

After that, after Rafa's command, a simple neat engine was produced.

When he uttered the phrase "The essence of the progress of human civilization is the progress of boiling water", Rafa personally sent the coal that had just been mined from the mine into the combustion chamber that was ignited by Elle, and when the flame rumbled, he pressed the intake valve, which represented the air intake.

"Knock Knock~~~"

The hot steam struck the gear that drove it to the side, and a gear without a winch turned violently, so that everyone standing in the distance could still feel the vibration of the thing when it was parked on the ground.

Rafa stood at the top of the machine, looking at the thing that had been reworked several times by the blacksmiths and painstakingly crafted, and he was very satisfied.

After a while, the speed of the steam engine slowed down significantly, and he also raised the intake valve and pressed the exhaust valve at this time.

"Snort~~~"

As the hot steam erupted, the whole clearing was covered with a huge mist, and the powerful air almost blew the skirts of the maids in the distance, but Felihill's skirt did not move at all, which disappointed Rafa, who wanted to see the "style".

The hot haze quickly cleared, and Felicille's eyes on the thing changed somewhat.

She felt something very different from a firearm, a different kind of power, different from the power of a firearm, but it was just as intimidating!

That's the beauty that comes from industry!

Flipping through the notebook, which had already written many things, she began to draw Rafa's drawings on the notes without moving.

This book of truth, which records notes beyond people's cognition, may become a book that will turn the world upside down in the future!

After ordering the blacksmiths to equip the big creature with a winch that could be turned with chains, Rafa followed behind the team carrying the creature, hoping that the creature would be more powerful in pulling the ore out of the cavern, and not to disappoint him too much.

Although the experiment was successful, there is no guarantee that it will be 100% useful.