Thanks to the efforts of the kobold troops, the construction of the underground factory was finally completed.

Jia Zhengjin set up a full set of facilities prepared in advance, and when the lights were turned on, the entire underground factory was particularly bright, giving people a modern vision.

After letting the kobold return to the mining area to continue his work, Jia Zhengjin immediately used all the equipment such as the workbench, furnace, and machine tool to smelt the ore and synthesize the materials, and was very busy.

Tina, Perrin, and Christina sat next to her and watched her husband busy silently, knowing that he couldn't be disturbed while he was working, so they simply whispered and chatted.

Originally, Jia Zhengjin asked them to return to the city, at least it wasn't so boring.

But some time ago, Jia Zhengjin was running around every day for the matter of the dark dragon, and his wives had been separated from him for a long time, so of course they wanted to spend more time by his side. After all, how long has it been since we got married?

Even just sitting quietly and watching him work is a pleasure.

Jia Zhengjin followed them, and he was very involved as soon as he was busy.

It's like playing a game, and he's not bored at all by making a lot of parts and equipment at the same time. After all, in a sandbox game, that's the basics! Not only will you never get bored, but you also have a special sense of accomplishment when you succeed in making the parts you need.

It was a feeling that only he could experience, and it was incomprehensible to Tina.

"It's a success!" After a long and boring time, Jia Zhengjin finally cheered and put the first batch of successfully manufactured parts into the virtual backpack.

"What succeeded?" the three wives who were chatting energetically were all attracted to him.

"I'm going to make the first new product I need!" Jia Zhengjin said excitedly, "It feels pretty good!"

"What's new?" Christina looked confused.

Tina and Perrin had the same expressions, wondering what the so-called new product was.

"Hmm~~" Jia Zhengjin looked around. The underground factory is spacious, but it's not suitable for display, "Let's go to the surface, I'll show you something new!"

"Something new?" the three wives, all puzzled, followed him back to the surface from the exit.

"Keane, what are you going to show us?" Tina asked curiously, standing in the middle of the forest.

"No hurry!" Jia Zhengjin turned his head to look at his surroundings, "You guys wait here for a while." ”

Tina, Perrin, and Christina, who didn't understand the situation, stood together obediently, watching Jia Zhengjin run to the side first, chop down a large number of trees with an axe, and clear a road. Then take cement blocks and lay a flat road that is not too long.

"What are you doing?" a voice sounded behind them as they looked confused. When he looked back, he saw Simon slowly walking out of the forest.

Tina and the others shook their heads together, and then looked at Jia Zhengjin: "Kean said he was going to show us a new product, I don't know what it is......"

"New products?" Simon knew about Jia Zhengjin's underground factory here, so he walked over to take a look. When I heard this, I was also curious to watch.

Jia Zhengjin paved the road, and when he came back, he was a little surprised to see that Simon was also there: "Why are you here?"

"Come and have a look. Simon said indifferently, "What are you doing?"

"I want to know, come here!" Jia Zhengjin beckoned, and at the same time motioned for Tina and the others to join him.

The four of them came to the side of the road one after another, staring at Jia Zhengjin suspiciously, waiting for his action.

"Look, now is the time to witness a miracle!" Jia Zhengjin smiled mysteriously, turned around and took out the car chassis from the virtual backpack and placed it on the concrete road.

Faced with this huge car chassis, Tina, Perrin, Christina, and Simon were all at a loss.

"Keane, what is this big piece of iron for? new product?" Tina asked him suspiciously, "What's the use?"

"Iron gates?" Simon blinked, "so many holes in there...... Is it an iron window?"

Perrin and Christina had the same expressions, their eyes full of bewilderment.

"Look at it!" Jia Zhengjin did not answer immediately, but took out the rubber wheels and installed them one by one. After that, a series of parts such as engines, seats, and body were placed one after another.

Seeing an empty chassis, constantly enriching in his hands, finally completely turning into the appearance of a large transporter. In the face of this strange steel giant, Tina and the others still didn't understand.

"The Iron House?" Perryn looked around to the other side with a blank face, "Why are you wearing wheels underneath?"

"The carriage, if you want to pull him, you have to at least have a monster, right?" Christina said curiously.

Tina and Simon also circled around the transport, their eyes full of curiosity and confusion.

"Keane, what the hell is this for?" After going around several times, Tina still didn't understand, so she couldn't help but ask.

"Haha!" Seeing their confused expressions, Jia Zhengjin couldn't help but laugh, "I don't understand, right?

"High-tech, what's that?" the four were still at a loss.

"It's called a transport car!" Jia Zhengjin beckoned them to his side, and then pointed to the car body and said, "See? This is the front of the car, which is specially used for driving." Behind is the carriage, able to load!"

"The car?" exclaimed Christina, "and sure enough, it was pulled by a monster, but why is there no rein? and, where is the monster going to be placed?"

"That's right!" Tina and the others were all on the same page.

"No Warcraft!" Jia Zhengjin shook his head and smiled, "You first look at its loading, is this carriage big enough?"

When he opened the carriage and asked everyone to take a closer look, Simon first said, "You said this is a carriage, used to load goods?"

"That's right!"

"If that's the case, that's worth a dozen wagons. It's the equivalent of a small and medium-sized caravan!"

"Then what if there are more than a dozen transport vehicles? It can easily transport the goods needed by a large chamber of commerce!" Jia Zhengjin said proudly, "Once it is promoted, the carriage can be retired!"

"The Chamber of Commerce is used to using carriages, so why change this?" asked Perling with a blank face.

"Want to know?" Jia Zhengjin said with a smile, "The loading volume is secondary, a transport vehicle is equal to more than a dozen carriages, and the riders and bodyguards who drive first will save a lot." Then it has an anti-seismic system that walks more steadily than a carriage and can reduce bumps. For example, when it comes to vegetables, fruits, or fragile goods, it is safer than a horse-drawn carriage! The most important thing is that as long as it is on a concrete road, it will definitely not be able to run by a horse-drawn carriage! It just so happens that I am going to build a concrete road to all the national forces, right?"

"Is it really as powerful as you say?" Simon was a little incredulous, "It's such a big lump, I don't see any magic power in it, can it run?"

"Just try it?" Jia Zhengjin hurriedly opened the car door, "Everyone get in the car!"