Chai Lingyu went to the barracks during the day and came back at night, which made Cheng Chubi a little dissatisfied.

War is a matter between men, and you are a weak woman who is blind and strong? Whenever Cheng Chubi raised this question, he would be picked up by Chai Lingyu, which made Cheng Chubi quite helpless.

Are you a woman or a wrestler? Could it be that the women of Datang are so strong?

Chai Lingyu's mother is a famous female princess, who led a group of women's army to defeat Guanzhong, and his third uncle is Li Yuanba, the first good man in the Sui and Tang Dynasties, so you can imagine how strong she is.

At night, the lights in the room flickered and flickered.

Chai Lingyu looked at Cheng Chubi and said, "You killed someone today?" ”

"Don't you know everything?" Cheng Chubi said as he held the key to the treasury.

"It's just a slave, but there's no need to kill it."

"The customer bullies the shop, the slave bully the master, sometimes if you don't kill them, you can't shock them." Cheng Chubi said lightly: "Although the princess's mansion is said to be the princess's mansion, I am also the master of this family, if I let it go today, how will I order those slaves in the future." You give Ling Wu money silk, I don't object, but she can't. She is just a slave in our house, and a slave should be like a slave. ”

"I understand what you said, but you are a scholar, and you shouldn't kill anyone." Chai Lingyu shook his head and said, the Cheng family was originally a family of military generals, but there was a scholar, and he also became a monk, which always felt a little weird.

"A family must have the appearance of a home, and if you can't control those slaves now, how will you govern your family in the future? They are people from the Chai family, and I can understand that they have feelings for the Chai family, but this is the princess's mansion, not the mansion of the Duke of China, and the owners here can only be me and you, not your brothers and sisters. ”

"Are you scholars so small-minded?"

"It's not a matter of small eyes, it's a matter of principle. Forget it, I told you that you won't understand either. Cheng Chubi couldn't help but shake his head, in the next life, even if he is a brother, he has to settle accounts, the property of the princess's mansion is shared by husband and wife, even if Chai Lingyu wants to give Chai Lingwu, he has to inform himself. Chai Hou is just a slave of the princess's mansion, he dared to take money to Chai Lingwu behind his back, if he didn't kill her today, I don't know when the entire princess's mansion was emptied.

The air became somewhat silent.

"By the way, who is older than you and the crown prince?" After a while, Cheng Chubi asked.

"Me." Chai Lingyu said.

"Then doesn't the prince have to call me brother-in-law? I'm relieved. Cheng Chubi said with a smile, his thinking jumped too fast, and Chai Lingyu almost didn't keep up

"I'll be back in a few days, should I go to the palace to see Your Majesty or to the Mansion of the Duke of Qianguo?"

"Go back to the Mansion of the Kingdom of China, nominally I am my uncle's daughter, but ...... Forget it, go to sleep. ”

"Remember to have lunch in the future, do you have lunch in the army?"

“……”

……

When he woke up the next day, after Chai Lingyu had breakfast, he went to the barracks, which made Cheng Chubi quite helpless. Originally, I wanted to cultivate more relationships with her, but now it seems that the other party is just using himself as a tool for fertility.

That's fine, everyone takes what they need.

Because of Cheng Chubi's prestige yesterday, no one dares to be disrespectful to Cheng Chubi after getting up today.

Soon, 500 catties of copper coins were sent to the foundry, a group of craftsmen were burning copper, the melting point of copper is much lower than iron, so only need to boil the copper, and then pour it into the mold that has been cast, the copper tube can be cast, these blacksmiths are also quite distressed when casting, copper is money in this era, money is copper.

Not far away was a child of twelve or thirteen years old, ragged and with a dirty face, who must have been the son of a craftsman. At this time, he was squatting on the ground and wrote '12345......' on a small branch.

"Do you recognize the numbers?" Cheng Chubi walked over, squatted down and asked.

"I know, I know, this is one, this is two, this is three." The other party said a little excitedly.

"How much is one plus one?"

"Equal to two."

"What is two plus two?"

"Equal to four."

"What is four plus four?"

"Equal to eight."

“……”

"What about ninety plus nineteen?"

"One hundred and nine!"

"I really didn't expect that I would find a little genius here." Cheng Chubi couldn't help but be happy in his heart, you must know that in this era of lack of knowledge, not everyone can learn mathematics, and it is very good for ordinary children to be able to count from 1 to 100. It's a bit rare that this kid can count.

"Boy, that's good, now I'm going to teach you another algorithm called multiplication, but before I learn multiplication, I'll teach you a multiplication formula." Cheng Chubi smiled slightly, and then wrote a multiplication formula on the ground, and muttered at the same time: "1x1=1,1x2=2,1x3=3,1x4=4...... 8x9=72，9x9=81.”

"If you can remember all these today, there will definitely be a place for you in this Datang in the future." Cheng Chubi touched the other party's head and said with a smile.

"Okay." With a bright smile on his face, the other party asked, "Master, can I pass this on to others?" They really want to learn. ”

"Yes, if they want to learn, you can give it to them, but I am not your master yet, and when you learn these things, I will consider taking you as an apprentice." Cheng Chubi smiled slightly and asked, "By the way, what's your name?" ”

"My name is Chai Qi'er."

"Chai Qi'er, this name is very good, there was once a knight's name called Su Qi'er." Cheng Chubi stood up, laughed, and said, "Work hard, knowledge changes fate." ”

Cheng Chubi left the place where the copper pipe was cast, and walked in the direction of the treasury, and Cheng Tiancheng followed closely behind him.

"Donkey, that kid just now wasn't an ordinary person." Cheng Tian whispered beside Cheng Chubi.

"Oh? Not an ordinary person? Is it still a fairy? Cheng Chubi smiled slightly and said, "It's just a child." ”

Cheng Di hurriedly pulled the corner of Cheng Tian's clothes and asked Cheng Tian not to talk too much.

The three of them came to the treasury, Cheng Chubi opened the door of the treasury and walked in, this treasury is not big, there is money everywhere, and Cheng Chubi is really happy in his heart.

I opened a chest, and inside it was a box of horseshoe gold, but this gold was not the legendary gold, the color of pure gold was relatively dull, some slightly red, and the golden ones were all copper or something else.

"Get rich, get rich, I suddenly have a plan to get rich, hahaha......" Suddenly, Cheng Chubi laughed.