I trade in both worlds

Looking at everyone's anxious expressions, Xu Ziqing smiled sheepishly: "It's okay, I was just too excited. I actually managed to get through. Wow, I can brag about this for the rest of my life."

As he was talking, he thought of something and looked at Xu Xu and said, "Xu Xu, do you think we should try it again?"

Xu Xu looked at her anxious expression, nodded readily, and pulled out the needle from his sleeve: "Come on, stretch out your hand."

Looking at the glittering embroidery needle, Xu Ziqing's heart shrank in fear. He took a deep breath, tilted his head, and stretched out his right hand: "Come on."

Xu Xu pricked Xu Ziqing's finger again and placed it on the door frame of the utility room. The dizzy feeling attacked Xu Ziqing again. She knew that this time it was successful. In the blink of an eye, she was back to the modern courtyard again.

"YES!" Xu Ziqing waved his fist happily, and then went back to ancient times.

Xu Xu looked at her in surprise as she disappeared and reappeared before his eyes. After a moment of silence, he said, "Do you think this door frame works for everyone?"

"Ah?" Xu Ziqing, who had never thought about this question, was also stunned: "It shouldn't be possible, right? With such a big loophole, the world would be like a sieve. It shouldn't be possible."

"But, didn't you come?" Xu Xu looked at Xu Ziqing with suspicion.

Although this is indeed the case, who doesn't want to be the only one? If everyone can travel through time, what advantage do you have?

Xu Ziqing thought of this possibility, shook his head vigorously, and said firmly: "The reason I can come must be because you went to my house, yes, it must be like this."

It's not impossible, otherwise why wouldn't the entrance and exit appear in someone else's utility room? Xu Xu was temporarily convinced: "What you said makes sense."

"Yeah, yeah." After getting the affirmation, Xu Ziqing continued to speculate: "We both have the same surname, Xu. Do you think there is a possibility that we may, perhaps, maybe, be related."

Xu Xu was simply stunned. What kind of connection was this? It couldn't be possible that Xu Ziqing was his descendant.

Looking at Xu Xu's expression, Xu Ziqing's brain waves suddenly received Xu Xu's brain information, and he shuddered involuntarily, and said expressionlessly: "There are no descendants, the dynasties are different, and we should not extend the timeline."

"Okay." Xu Xu felt an indescribable sense of loss deep in his heart.

Not wanting to have one more ancestor, no, one more group, and four of them were little brats, Xu Ziqing made small talk: "It's still raining outside."

"Yeah, it's so annoying." Xu Zhun sat on the threshold of the door, his chin supported by his hands, staring at the yard with lifeless eyes.

Xu Ziqing looked at his lonely back and heard him speak like a little adult, which was so funny that he couldn't help but tease him: "You are a child who hasn't even grown all his hair yet, what's there to be annoyed about?"

Xu Zhun touched the rocket on his head, glared at Xu Ziqing, and pouted his lips as he retorted, "My hair has grown back, thick and dense. Humph."

Xu Ziqing watched his actions, and after a moment of silence, he could not help but burst into laughter. Xu Xu also looked at him with a smile on his face, not knowing how to explain that Xu Ziqing did not mean that.

Xu Zhun watched her laugh so hard that she held her belly. He didn't understand what she was laughing at, but he still had to say what he had to say: "Who says that children don't have worries? There are so many worries."

"That's right, that's right." Xu Qiwei imitated the movements of the Monkey King and said while dancing: "I am the Great Sage Equaling Heaven."

When Xu Zhun and Xu Jin saw it, they started to learn it too, and soon they were laughing and playing together.

Xu Xu and Xu Ziqing couldn't understand their thinking. They were just talking about their worries, and now they started to make a fuss. What kind of worries are these? Do they know what worries are?

Leaving the kids playing and taking care of the babies in the main room, Xu Xu took Xu Ziqing to look around the main house, and then walked around the kitchen, west wing and east wing wearing a bamboo hat.

The bowls in the kitchen were ordinary stoneware bowls, and the chopsticks were ordinary bamboo chopsticks. They didn't look very valuable. But the half-new furniture made Xu Ziqing a little excited: "Xu Xu, these furniture should be worth a lot of money if we move them there. However, if we can get expensive furniture, it will be priceless."

"I can't afford the expensive ones." Xu Xu said helplessly: "Some furniture made of precious wood is also worth a fortune here."

"Alas." Xu Ziqing said dejectedly: "That's right. In ancient times, precious things were not something that ordinary people could enjoy. Even if ordinary people had money, it was difficult to buy them."

Speaking of civilians, Xu Ziqing recalled the plots in various novels about people getting promoted and getting rich by growing corn, potatoes and other crops. He turned around and asked Xu Xu, "Xu Xu, what is the grain production here?"

"Wheat?" Xu Xu was a little surprised why he asked about the grain yield. "The fertile land has a yield of more than 1 dan per mu, and the poor land has a yield of less than 1 dan per mu."

In ancient times, 1 dan is equivalent to 49 kilograms in modern times, which means that the better ones may be a little more than 100 jin, and the worse ones may be less than 98 jin. This output is too low.

"Is it so low? What about rice?" Xu Ziqing was stunned. She knew that the yield was low in ancient times, but she didn't expect it to be so low.

"Is it very low? Here we can yield more than 2 shi of rice per acre of rice. It depends on the soil fertility. If the soil is not fertile enough, it may be just over 3 shi," Xu Xu replied.

"How much rice and flour can be produced from one pound of rice and wheat?" Xu Ziqing had never farmed before, nor had he paid attention to information in this area, so he had no idea about it.

Xu Xu looked at her in surprise. This was common sense to them and they could answer it by asking anyone. However, Xu Ziqing seemed to have no idea at all.

"A pound of wheat can produce at most 8 taels of flour, while a pound of rice can produce at most 6 taels of rice," Xu Xu replied.

A pound of wheat can only produce 8 taels of flour at most, so 100 pounds of wheat can only produce 80 pounds of flour. An adult is a heavy laborer, so if he eats as much as he wants, even a pound of flour a day may not be enough. Even an acre of land cannot feed a person. It is really too difficult.

Rice is a little better, but in the north it can only be planted for one season, and two seasons of wheat will yield about the same output. Overall, the yield is still too low. This is because the population was small in ancient times and the per capita land area was large.

Even in modern times, in some places in the south, each person only has a few acres of land. If the output were based on ancient times, people would starve to death.

The yield in ancient times is far behind that in modern times. Modern wheat yield per mu is basically around 550 kilograms, and rice yield has reached 1200 kilograms, which is more than 10 times higher than that in ancient times.