President, madam, she can't read it anymore

Mr. Chen expressed his puzzlement. Is this arithmetic a subject?Isn't this all Confucianism?What is there to learn about mathematics?This is an era when scholars are dumbfounded by reading books. They only know Confucianism and want to be an official, but they really don't pay attention to other knowledge.

Hearing what he said, Zhang Xuanyu smiled and shook his head.

"Make a bet, I will give you 50 taels of silver, and then you will give me rice for two consecutive months, one grain on the first day, two grains on the second day, and four grains on the third day. Double the amount of rice from the previous day," Chen Ziang thought for a while, and thought it was a good deal, so he agreed.

Then, Zhang Xuanyu brought a pen and paper and calculated for him.

In the end, don't say that the 50 taels of silver are not enough, even if you take out another few hundred taels of silver, it is not enough to fill this hole.

Zhang Xuanyu smiled and said: "This is mathematics in nature!" Only then did Chen Ziang stop his contemptuous heart.

The two of them discussed the teaching plan, read in the morning, endorsed in the afternoon, and set aside an hour to study mathematics.

Zhang Xuanyu has already made arrangements, first tell them the Arabic numerals, from 0 to 9, and after they know these numbers, teach them addition and subtraction, carry, and multiplication and division.

Zhang Xuanyu felt that such knowledge could be learned for a period of time.

When all this is learned, he will teach them other things.

After the discussion, Zhang Xuanyu asked someone to call Zhang Yong, Zhang Hua and Jia First, and asked them to come to apprentice first.

Wait until class starts tomorrow and let them start learning.

After seeing a few children, Chen Ziang said goodbye, and he wanted to go back to pack his things and move them here.

Zhang Xuanyu sent Chen Ziang out of the house, and asked Zhang Fu to arrange someone to follow him to clean up together, and come back after cleaning up.

Then, let Zhang Fu vacate the upper room of the old house and use it as a private school.

After all these works were completed, Zhang Xuanyu went to open the shop and was ready to open.

Before opening, Zhang Xuanyu specially wrote a notice, the general content is that from now on, Zhang's store will sell fireworks, one or two boxes of fireworks, and hope that all customers will patronize.

After writing, I called Zhang An and posted it outside the store.

In the first two days, since the fireworks were still in the publicity stage, although many people came here admiringly and wanted to buy fireworks, they were all rejected by Zhang Xuanyu.

Feeling that the time was not up yet, he added fireworks to the store's sale list.

To this day, after three consecutive nights of fireworks displays and the vigorous publicity by Huaxi and others, the fireworks have finally gained fame.

Zhang Xuanyu felt that the time was ripe and decided to start selling fireworks today.

Today's Zhang's store is more lively than before.

Moreover, once the notice for the sale of fireworks was posted, it immediately became a sensation.

There was a lively discussion outside the door.

"Old Zhang, the fireworks are sold!" "Yeah, I can't wait! I wanted to buy them for a long time, but the shopkeeper Zhang has not sold them!" "Go, go and inform the master that the fireworks are sold out, ask How much do we want to buy," a butler-like man was instructing a little girl next to him.

The front row outside Zhang's store is relatively long.

Many latecomers couldn't help shaking their heads when they saw the long queue, but they still felt lucky, just in case they could get in the queue.

Some best-selling items were sold out quickly, mainly because the system did not increase the number of items.

Fireworks was finally included in the bestseller today, and they were all sold out in less than a day.

After Zhang Xuanyu told the news to the people in line, the people outside were very dissatisfied.

And Zhang Xuanyu knew that after these best-selling products were sold out, the business would not be big.

So he asked Zhang An to bring a few servants to sit in the shop and continue selling things for him, while he himself returned to the courtyard.

First, he came to the study room and saw Mi Hua, Mi Yue, and Chen Yuanyuan sitting together. The three of them seemed very cautious.

It gave Zhang Xuanyu a headache.

Set a rule in his own family, that is, two people can't fight openly, otherwise, he will send them away.

Seeing Zhang Xuanyu's resolute look, the three of them restrained themselves, not daring to blatantly confront each other.

After Zhang Xuanyu established the rules, the three stepped aside and came to the study alone. He wanted to take stock of today's sales.

As expected, due to the addition of fireworks, a best-selling product, today's sales hit a record high, reaching about 280 yuan.

This sales data made Zhang Xuanyu both pleasantly surprised and carefree.

With so many exclusive products, if you can't sell so much money, you are really blinding the store's system.

Seeing so many silver coins, Zhang Xuanyu fell into deep thought.

The last time a system upgrade was triggered because 100 silver dollars were sold within one day.

After that, although more than 100 taels of silver could be sold every day, the system did not stop functioning.

This made Zhang Xuanyu very confused. He really didn't understand the system, how could he continue to upgrade?While Zhang Xuanyu was thinking wildly, the long-lost line appeared in his mind.

Congratulations to the host, the sales exceeded 200 taels that day, and a special reward: a barbecue grill! "Zhang Xuanyu was stunned for a moment, why didn't he mention the unlocked product, how to reward the grill? Do you want to change careers to be a chef?
After eating the barbecue, Zhang Xuanyu thought that it would be best to use the barbecue while it was still summer, but he quickly dismissed the idea.

Although the basic raw materials can be found when making barbecue, I don’t know if there are any seasonings, especially the cumin powder that is standard in barbecue.

If there is no cumin powder, then the roasted meat is equivalent to cooking without salt, and there is no such taste at all.

Also, it's a pity to eat barbecue and drink beer.

Thinking of this, Zhang Xuanyu remembered the incident of masturbation a few nights ago.

At nine o'clock in the evening, I meet three or five friends, and everyone sits at a roadside stall, chatting, eating meat or vegetable skewers on bamboo sticks, and drinking cold beer. The taste is not too refreshing.

Thinking of this, Zhang Xuanyu's saliva was almost drooling, and he began to miss his former friends in his heart.

Dagou, Ershun, and the three children, are you all right?Before his thoughts were over, another line of words appeared in his mind.

"Congratulations to the host, the exchange function is open, currently only supports the exchange of food products, specific products, please check the host.

In the store system, the upper limit of the number of items becomes 500 per day.

"In view of the fact that the host has passed the previous difficult period, from now on the host needs to deduct a certain fee for extracting items from the virtual space. The host needs to prepare silver and copper coins in advance and put them into the virtual space so that the system can deduct them.

"Grade points enable the function. Every time the host sells 100 taels of silver, a grade point will be accumulated. The grade points can be used to exchange for special items. Please look forward to it! Zhang Xuanyu was stunned for a moment. What's wrong with this system? I only sent a message just now. Thought so.

Unexpectedly, now the system has sent so many adjustment messages at once, how can people remember this?Will there be information bombing too?