Little Sizi came to my house and became the family's darling, and Li Shimin got anxious.

With a soft "clunk," Guo Qian opened the door to the back of the truck.

What came into view were several large boxes of supplies, packed full and neatly stacked.

Besides the sealed bags of corn seeds, the most eye-catching items were the several large boxes of tender, lush sweet potato vines.

Guo Qian reached out and fiddled with the lush green vines, then turned to Empress Zhangsun and said, "These sweet potato vines are a real problem. The temperature and humidity in Guangzhou are high right now, and the vines are detached from the soil. If they are kept in this box overnight, most of them will rot by tomorrow. These are the mainstay of high-yield grain crops, and we can't afford to damage them."

Li Yinxun took a closer look and saw that the leaves were indeed slightly wilted. She nodded and said, "Then we can't wait any longer; we have to transport them over immediately."

"I've been thinking about it," Guo Qian pointed to the carriage, "Let's transport this whole load of sweet potato vines over first, and have the palace arrange for people to dig holes in the fields, bury the vines in them to keep them moist, which is basically temporary planting. Let them sit overnight, and tomorrow we can plant them directly in the ground; that will have the highest survival rate."

"Okay, let's do it this way."

Upon seeing this, Empress Zhangsun, without saying a word, took Li Lizhi and the still-troublesome little princess back to the Tang Dynasty to prepare for the takeover of the site.

Li Yinxun ran back to the basement, took out the broken bowl used for positioning from the safe, and brought it to the front yard of the villa.

The reason I bought this villa was because of its high, solid walls that completely blocked the view from the outside.

This was to make it easier to send the supplies back to the Tang Dynasty.

As soon as he put the broken bowl away, Guo Qian stood by the truck, staring intently at her, his eyes filled with barely concealed excitement.

"Honey, am I really going to the Tang Dynasty?" He rubbed his hands together, like a primary school student about to go on a school field trip. "It's just a pity there's no one to share it with."

Li Yinxun rolled her eyes. "What sharing? You make it sound so good, but you're just bragging."

"Hehe, my wife knows me best."

Who wouldn't want to brag about this for a lifetime?

The two chatted for a few moments, and then their cell phones vibrated.

Empress Zhangsun called to say that everything was ready.

"Let's go, let's start!" Li Yinxun waved to Guo Qian.

Guo Qian jumped into the driver's seat and started the engine.

With a low rumble, the two men, along with the entire truck, were instantly twisted and swallowed by the vortex of time and space.

……

When I opened my eyes again, I saw a wide and straight bluestone road.

Outside the car window, the red walls and yellow tiles stood majestically, and in the distance, the eaves of the Taiji Palace shimmered in the setting sun.

The truck landed steadily on a wide main road outside the palace. There were many imperial guards around, who, although holding long spears and looking wary, did not step forward to stop it because Empress Zhangsun had given prior notice.

Li Yinxun pushed open the door and got out of the carriage. She saw Li Shimin and Empress Zhangsun standing side by side, with a neat row of people standing behind them.

Those people were all dressed in neat round-necked court robes, exuding an extraordinary air.

Even though Li Yinxun didn't know much about Tang Dynasty official robes, she could recognize these familiar faces at a glance.

Changsun Wuji, Fang Xuanling, Wei Zheng, and those instantly recognizable figures like Cheng Yaojin and Yuchi Jingde.

This is half of the Tang Dynasty's territory.

Seeing the two alight from the carriage, Li Shimin strode forward and laughed heartily, "Brother-in-law, Xiao Xun, you've had a hard day!"

After saying that, he turned around and pointed to the group of ministers behind him, introducing them one by one: "These are my trusted ministers: Changsun Wuji, Fang Xuanling, Wei Zheng, Cheng Yaojin, and Yuchi Jingde."

Li Yinxun and Guo Qian bowed respectfully, saying, "Greetings, esteemed lords."

All the ministers' eyes fell on the two of them, scrutinizing them closely.

The two men were dressed in strange styles, but their facial features, speech and behavior were no different from ordinary people.

Furthermore, their ability to control iron chariots out of thin air and descend from the sky made them seem like supernatural beings to the court officials.

The ministers were secretly shaken and quietly labeled the two men as unfathomable.

Ignoring the probing gazes of the crowd, Guo Qian turned and walked to the back door of the truck, opening the cargo compartment.

A field of fresh and lush sweet potato vines was instantly revealed to everyone.

The ministers gathered around, their faces filled with confusion.

Wei Zheng reached out and twirled the leaf, his brow furrowing slightly: "I wonder what this is? Although it looks lush and green, it doesn't seem like any kind of grain."

Li Shimin also looked at Guo Qian and spoke frankly: "Brother-in-law, is this the high-yield crop you spoke of? But all I see are vines; where are the seeds?"

Guo Qian patiently explained, "Brother-in-law, this thing is called sweet potato. It is a root crop. If we use whole sweet potato seeds directly, it will consume too much and the cost will be extremely high. Our method is to first cultivate seedlings and then grow vines."

He picked up a vine and gestured, explaining, "Cut this vine into sections, stick them in the soil, and they will take root and sprout. In this way, one vine can grow a whole bunch of sweet potatoes, with extremely high yield and saving on seedlings."

Li Shimin's eyes lit up. "Such a wonderful method! Cutting a piece of soil and burying it will bring it back to life? Excellent, excellent!"

If this policy can be successfully implemented, then the granaries of the Tang Dynasty will never be full.

After talking about sweet potatoes, Guo Qian turned around and found that the scene behind him was a bit strange.

Changsun Wuji, Cheng Yaojin, Yuchi Jingde, and a group of other military generals were seen circling around the large blue truck.

He would reach out and touch it, then squat down to look at the huge tire, marveling at it.

Cheng Yaojin, with his loudest voice, couldn't help but ask in a high-pitched voice, "Your Majesty, what... what is this iron lump? It's so big, it looks even more imposing than our siege engines!"

Li Shimin boasted, "This is called a carriage; it doesn't need horses, and it can travel a thousand miles a day!"

"Travel a thousand miles a day?!"

Cheng Yaojin, Yuchi Jingde, and other veteran generals on the battlefield widened their eyes like copper bells.

For those who are constantly fighting on the front lines, the most troublesome thing is transporting supplies.

If such large carts could accompany the army, wouldn't the marching speed be doubled?

The generals' eyes instantly turned fiery as they looked at the truck.

Guo Qian saw through the old generals' thoughts at a glance and had to pour cold water on them.

"Generals, this cart can indeed carry goods, but it's heavy and consumes a lot of fuel. Right now, most of the roads in the Tang Dynasty are muddy and full of potholes, and the road conditions are poor, so I'm afraid the cart won't be able to move."

Upon hearing this, Li Shimin waved his hand dismissively.

"That's no problem. If the road is bad, I'll fix it!"

Upon hearing this, both Li Yinxun and Guo Qian were stunned.

Li Shimin continued, "I already had people study the cement-making method using diagrams I found on my phone. After several trials, the results were excellent. What difficulty is there in paving roads? Given time, I will have all the main roads within the Tang Dynasty paved with cement! At that time, not only will large carts be able to pass through unimpeded, but even thousands of troops will be able to move freely!"

Li Yinxun and Guo Qian exchanged a glance, both seeing a deep shock in each other's eyes.

Even when Li Shimin in other time-travel novels has a mobile phone or computer, he mostly passively asks how to do it or whether it can be made.

The Li Shimin before us is different; he has secretly secured cement and has even begun planning a nationwide road network.

She had previously studied white sugar and refined salt, so wouldn't that render her efforts useless?