Nu Yalang of Tang Dynasty

Hearing the shouts, Zhou Dinghai and Zhou Jun looked up.

I saw a few strong men running at full speed and caught an Orchid woman who had escaped from the convoy.

After a while, Sha Shiqing's men brought the Hu Ji woman over and kicked her down into the mud.

Seeing the woman's appearance clearly, Sha Shiqing couldn't help but became furious: "You ugly maid! You tried to escape before, I spared your life, but now you dare to escape a second time!"

"I'm going to cut off your hand tendons and hamstrings to show others what happens to runaway slaves!"

Zhou Jun looked closely and saw the ugly maid Sha Shiqing was talking about. She was wearing tattered black linen. She was short and stooped. Her face, arms and legs, and the exposed skin, were covered with countless festering red scars.

The sores make it impossible to look straight at them.

Sha Shiqing picked up the dagger and walked towards the ugly maid in a rage.

Zhou Jun was just about to say something to persuade him, but he heard a clear and loud knocking sound coming from the direction of the Zhongshi gate.

Someone shouted in the distance: "The market is open, the market is ready to open."

Sha Shiqing was stunned, stopped, and asked his subordinates: "Are the customs documents and tax invoices ready?"

The subordinates whispered fearfully: "All the Guan ultimatums have been prepared, but the tax invoices have not been completed yet."

Sha Shiqing said angrily: "Why isn't the tax code ready yet?!"

Staff: "A few days ago, two Uighur slaves lost their bids, and a Turkic slave girl gave birth to a son. According to the tax system of the city department, the taxes for entering the market and traveling must be recalculated. After the accounting room was redone, it was found that there was a miscalculation.

I can’t always get it right, so…”

The anger in Sha Shiqing's eyes grew stronger and stronger, causing his subordinates' voices to grow smaller and smaller.

Zhou Jun, who was listening on the sidelines, first looked around at the slave pens, then lowered his head and thought for a while, and finally asked Zhou Dinghai in a low voice: "I can help prepare the tax invoices."

Zhou Dinghai was stunned, looked at Zhou Jun and asked in disbelief: "Do you know arithmetic?"

Zhou Jun: "Slightly understood."

Zhou Dinghai didn't believe it at first, but when he recalled Zhou Jun's performance these days, he felt a little unsure.

He thought about it again, he had been dealing with Sha Shiqing for almost ten years, and the two could be considered good friends.

It's okay to let the second son try this tax issue. Even if it doesn't work, I don't think Sha Shiqing will blame him too much.

After thinking about this, Zhou Dinghai walked to Sha Shiqing and said, "My son Zhou Jun has some experience in arithmetic, why not let him try it?"

Sha Shiqing looked at Zhou Jun with a suspicious look on his face, but in the end, with the mentality of treating a dead horse as a living horse doctor, he still brought a copy of the tax guide.

When Zhou Jun opened the tax quotation and took a look, he roughly understood that this was the "Han Yan Planning Method" mentioned in history books.

The essence of this strategy lies in splitting and adding numbers.

For example, if the multiplier is 35, then divide 35 into 5 and 7, multiply it by 5 first, and then multiply it by 7.

If the divisor is 12, then divide 12 into 2 and 6, first divide by 2, then divide by 6.

If the multiplier is 13 and cannot be divided any more, then "add three" to 13, that is, first multiply by 10, then step back one digit, and add three times that number.

This calculation method greatly simplified the "three-column calculation method" in the early Tang Dynasty, which was a great progress in the history of Chinese mathematics.

However, this algorithm also has disadvantages, that is, splitting and adding numbers will greatly increase the amount of calculation, and it is very easy to make calculation errors.

However, Zhou Jun had a trick for calculating the multiplication of odd numbers - the multiplication table.

I saw Zhou Jun taking a pen and paper, and while comparing the numbers on the tax quotation, he muttered something: "Six, seven, forty-two, six, eight, forty-eight..."

To ordinary people, these nine-nine formulas are like a mantra, meaningless.

However, someone at the scene heard some clues in this.

When Zhou Jun was calculating the tax bill, out of the corner of his eye, he noticed the ugly maid lying on the ground, covered in mud. Unconsciously, she turned her head slightly to the side, and her right finger joints trembled slightly.

These two actions are called "thinking and listening" in the field of micro-expressions.

Turn your head slightly to the side to align your ears with the source of the sound so that you can hear the sound more clearly.

The unconscious trembling of the knuckles means that the brain is thinking or recalling something.

These two actions taken together mean that the person concerned is listening to the sound attentively and thinking about something.

Why did an ugly slave girl behave like this when she heard math formulas?

Zhou Jun was curious and deliberately tested it for a while with a few formulas.

After some confirmation, Zhou Jun was convinced that the ugly maid who wanted to escape did have arithmetic skills.

About ten minutes later, Zhou Juntong checked the tax quotations and pointed out some omissions in the results.

Sha Shiqing's men compared it and found that all the numbers matched, and they couldn't help but breathed a sigh of relief.

Zhou Dinghai was naturally surprised and delighted. He never expected that his good-for-nothing son who was addicted to alcohol and sex could actually be proficient in arithmetic.

A rare smile appeared on Sha Shiqing's face. He looked at Zhou Jun and said, "You are capable, Mr. Zhou. Do you want to go to the west with me?"

Zhou Dinghai said quickly: "Erlang is still young and cannot go to the bitter cold places in the west."

Sha Shiqing blinked his eyes and said without giving up: "Although it is bitter in the west, you can get whatever you want in terms of money, wine, and women. In a few years, when you return to Chang'an, you will have many wives and concubines, and you will be rich."

One side.”

Zhou Jun thought for a while and declined Sha Shiqing's kindness.

When the time came, Zhou Jun said to Sha Shiqing: "I have taken a fancy to your maid here and want to buy it."

Sha Shiqing smiled and said, "Just ask whoever you like."

Zhou Jun pointed his finger at the ugly maid on the ground who was covered in sores and stooped, and said, "I want to buy her."

As soon as this statement came out, everyone couldn't believe their ears.

Zhou Jun of Shashi Qing Dynasty said: "I found this ugly maid in the Turkic slave circle. She is covered with sores all over her body, her face is terrifying, and she is mute. Even the Yapo who is doing the physical examination is not willing to approach. You really

Want to buy her?"

Zhou Jun nodded.

Sha Shiqing kindly advised: "Zhou Lang, you can take a closer look. I have the youngest daughter of the noble family of Turkic Ashina here, as well as the Kumari (virgin living god) of the Zhushanlu Kingdom.

She is a beautiful beauty..."

Zhou Jun looked at the ugly maid and said with a smile: "I only buy her."

Sha Shiqing was silent for a moment, then shook his head and said: "Since you have made up your mind, I won't say more. I won't charge you for this ugly maid. You can just complete the official deed, get the market certificate, and take it away by yourself."

."

After saying that, Sha Shiqing called for a subordinate and asked the latter to take the Zhou family, his son and Nu Biao to the city department to handle the relevant procedures.