With a warehouse full of supplies, I stood alone as king in this chaotic world, gun in hand.

"Not bad." Nangong Wu looked at the foundation of the inner wall, which was already half-excavated, and it was progressing much faster than expected.

"Brother, you guys are busy, I'll go back to the government office first."

She needs to go back and get more steel bars and cement, waiting for the space to automatically replenish them.

"Alright, you go back and rest first. It's good that your brother is here." Nangong Xiao felt sorry for his sister who had been running around all day.

"Okay, then I'll head back now." Nangong Wu smiled at him and turned to leave.

Back at the government office, she called Eileen out to help, laid out plastic sheeting in the backyard, and took out a thousand bags of cement.

That evening, she led Li Zhan, Su Siyan, and a few others to the plot of land where Ji Hongfei had leveled the ground, and brought out the materials for the mobile house.

"Princess, what are all these things for?" Ji Hongfei asked, rubbing his hands together.

These iron contraptions look very high-end; the princess must be making something amazing with them.

"Materials for building temporary houses." Nangong Wu clapped her hands, mounted her horse, and headed towards the construction site.

She placed some steel bars and several piles of sand next to the foundation.

She brought this sand into her space on a whim, intending to use it to build a house, but it had never been put to any use.

If I had known I was originally from here and would travel back in time, I should have taken whatever I saw in my previous life!

Finally, she took out almost everything needed for the construction, so that she wouldn't have to find a secluded place to get it when needed during the day, when there were too many people around.

The next day.

Eileen helped teach the Flying Feather Guards how to install mobile houses, while Nangong Wu led a few people, including Qiao Xiangqing who insisted on going with her, to search for sand upstream along the moat.

The materials she needed to build the city wall were the same as those used to build skyscrapers in her previous life. Sand is one of the three core components of concrete, and the demand is large, so she had to find a good place to get sand.

This type of sand can only be made from river sand and manufactured sand.

River sand and manufactured sand have sharp edges, fewer impurities, rough surfaces, and low salt content, which allows them to bond tightly with cement slurry, ensuring structural strength and durability.

Today, she traveled a long way to find usable sand. She used river sand first, and when that wasn't enough, she hauled stones to crush and make machine-made sand.

After returning, she wrote a job posting, made many copies, and had them posted in the city.

The mountain roads here are rugged and there are no highways for cars. To haul sand out of the mountains, you have to rely on manpower and horse-drawn carts.

The notice read: We are recruiting laborers and horse-drawn carts to haul sand. Food is provided, and the more you work, the more you earn. We pay per cartload of sand, and the price varies depending on the distance.

Piece-rate work can improve efficiency.

When the idle people saw the notice, they all rushed to the government office to inquire about the situation.

Nangong Wu's asking price was naturally not low, which immediately caused a stir throughout the city.

They had previously thought that building a large city would require a lot of people to do the work, and they could earn some wages. However, when construction started, all the digging was done with those big iron tools, which disappointed them greatly. Now, they finally have a chance to make money.

But to haul sand, you need a horse-drawn cart.

Many people in the city owned horses, but a sudden flood forced them to take only their horses with them, and many carriages were submerged and unusable.

For a time, all the men in the family went up the mountain to find timber to make carriages.

Even those from poor families who don't own horses still want to hire people to pull the carts, since pulling a cartload of goods brings in a lot of money.

Some people with a little money wanted to go to other places to buy horses.

The mobile houses were installed, with dozens of large rooms. Nangong Wu, Nangong Xiao, Nangong Hong, Qiao Xiangqing, and some other important core members lived here. During the day, soldiers guarded the area, and at night, Flying Feather Guards stood watch. No unauthorized personnel were allowed to approach.

As for the government office, there is food and supplies, and several thousand soldiers are stationed there to guard it.

The next day, Nangong Wu posted another recruitment notice: the original city wall will be demolished tomorrow, and the stones and soil will be used to fill the moat. Those who want to work should come to the government office to register today. The pay is one tael of silver per day.

The old city walls were demolished and the moat filled in to facilitate construction and the hauling of sand into the city.

Almost every able-bodied man in the city signed up.

The work was supposed to start at 3:45 AM the next morning, but before that time, some people had already started working.

Ji Hongfei looked at the bluestone slabs at the city gate and felt regretful. "Princess, those bluestone slabs were carved by hand. It's a pity to just bury them under the river like this."

"Then let's keep them." Nangong Wu also thought those bluestone slabs were quite good and shouldn't be used to fill the riverbed.

"I'll go tell them," Ji Hongfei said as he ran off to find someone.

Nangong Xiao, who was beside him, laughed and said, "Little sister, you've been back for two days, and everyone has something to do. Everyone is busy as bees."

"Give them something to do, and they won't overthink it," Nangong Wu said.

The city of Runan has been flooded for so long. We have no homes and no business to do. All we can do is wait for our daily meals. It's not a good feeling.

"Little sister, no matter where you are, you can always control the situation." Nangong Xiao sincerely admired his little sister. He didn't know what was going on in her head; she was incredibly smart.

"I've heard stories about you from the past. Even when you were at a disadvantage and surrounded by powerful enemies, you were able to turn the tide and win. I admire you, brother."

Nangong Wu chuckled, "Brother, I love hearing you say that."

"Little sister, can't you be a little more modest?" Nangong Xiao raised his hand and ruffled her hair.

"You're my brother, so being so humble is so fake!" Nangong Wu said as she mounted her horse. "I have to deliver food to the army later and won't be back until tomorrow, so be careful."

"I understand. Be careful too," Nangong Xiao instructed her.

"Understood." Nangong Wu spurred her horse and headed towards the city gate.

She didn't return until the afternoon of the following day.

I called a meeting as soon as I got back.

"Princess, the foundation of the inner city wall has been basically dug. Shouldn't we start construction today?" Ji Hongfei asked.

"No!" Nangong Wu took out a map she had drawn and placed it on a table. She had drawn it when she went to find river sand.

"Tomorrow, let's put the foundation work aside for now and focus on building the dam first, then we can modify the downstream river channel."

Building dikes is of paramount importance.

"We blocked this branch of the river to divert water into the moat, but it also provided a water source for the people along the river. Now that the dam is blocked, the people are having trouble even getting drinking water."

We need to repair the dikes during the dry season, leaving drainage holes and vents to ensure the safety of the project, regulate the water level, and ensure that people downstream have access to water.

Upon hearing this, everyone gathered around to look at her map.

Ji Hongfei was a little confused, scratching his head. "Princess, please tell me!"

"Seventh Prince, have you understood it?" Nangong Wu asked, looking at Nangong Hong, who was deep in thought.