Now Li Xiaogong is looking forward to the cooperation with Du Chengfeng more and more, and the thirty percent profit is not lost at all.

This Du Chengfeng seems to be not only a demonic genius, but also a business wizard.

The explanation of just eight words gave him a feeling of enlightenment.

What's more, it can be felt from Du Chengfeng's words that these are just scratching the surface, and there should be deeper thoughts.

"Then little brother Chengfeng, when do you think our cooperation will start?" After seeing Du Chengfeng's business talent, Li Xiaogong suddenly felt that a talent like Du Chengfeng still had to be won over as soon as possible.

"Lord Wang, there will be a lot of funds for the follow-up of this transformation plan, are you sure you won't think about it anymore? First of all, I won't pay a penny! Du Chengfeng asked jokingly.

"Haha! When I see you today, I am full of confidence in you, and I believe that you will not disappoint this king, right? ”

Li Xiaogong stroked his half-white beard and smiled meaningfully.

"The prince is so courageous, in this case, I will not disappoint the prince." Du Chengfeng said without changing his face.

"And what does the king need to do?" Li Xiaogong asked.

"The prince needs to do a lot. First of all, the prince has to take at least 20 acres of land around Wangjiang Tower, including the original building has to be demolished, I don't know if the prince can do it? Du Chengfeng stared at Li Xiaogong Zhengse.

At least 20 acres, this area is a bit big, Xiao is Li Xiaogong, as a prince, also changed his face when he heard it.

There are many shops around Wangjiang Tower, and they belong to different magnates in Chang'an.

There are also several small family houses connected to the back row, and it is a little difficult to acquire them all. It's not impossible, it's just that it takes some time.

Xiao Xiaogong thought seriously for a moment and said firmly: "Okay, this one will be handed over to this king, it just takes some time." ”

"Time is not in a hurry, we can launch new dishes in the early stage, accumulate funds, and wait until all the surrounding land is taken to renovate." Du Chengfeng said.

Li Xiaogong breathed a sigh of relief and said, "That's good, that's good." The little brother who rides the wind has some other requirements to say together. ”

Du Chengfeng thought about it for a while, many of the projects in the plan were not available in the Tang Dynasty, and he had to redesign them himself.

For example, those chess and card rooms, billiard rooms, etc., so craftsmen are more important, after all, they only have one pair of hands.

There is also a close confidant of his own who also needs to go over, and this person has to think about it himself.

The current bookkeeping methods and calculation methods in the Tang Dynasty were too cumbersome and unintuitive, and they were in the limelight.

Du Chengfeng planned to find someone to teach him to use a modern account book to keep accounts, and to use Arabic numerals to keep accounts, which was more convenient and faster, and it was more convenient to check the accounts.

"Lord Wang, I also need a group of craftsmen with good skills. Including carpenters, masons, kiln craftsmen, blacksmiths. Du Chengfeng said in one breath.

"By the way, Lord Wang, since this Wangjiang Tower has my interests of thirty percent in the future, I think it shouldn't be a problem to send another account office, right? Your bookkeeping methods are so cumbersome! Du Chengfeng couldn't help but complain.

Li Xiaogong didn't care too much when he heard that Du Chengfeng wanted a group of craftsmen, and if he wanted to renovate Wangjiang Tower, these craftsmen must be necessary. Just recruit some of these.

Hey! Du Chengfeng just seemed to say that the bookkeeping method is too cumbersome? Could it be that this kid is also very proficient in mathematics? Li Xiaogong said secretly. Good Chinese

"Could it be that the little brother who rides the wind also has a study of mathematics?" Li Xiaogong squinted his eyes and asked curiously.

Hey! Du Chengfeng grinned and called Shopkeeper Lu to the front of the couch. In front of the two of them, he wrote 10 Arabic numerals on rice paper.

Li Xiaogong and Shopkeeper Lu were stunned when they looked at the 10 strange numbers in front of them.

"What kind of text is this?" Li Xiaogong was puzzled. Shopkeeper Lu also stretched his neck, and he also wanted to know.

Du Chengfeng picked up the brush and wrote the corresponding 10 uppercase numbers under the 10 Arabic numerals, looked at the two and explained: "This is a number I invented, you can call it Arabic numerals." ”

"Each number corresponds to a number of our Datang, from one to ten. The benefit of this type of number is that it is more intuitive and easier to calculate. ”

After Du Chengfeng finished speaking, he picked up a piece of rice paper, quickly wrote down the ninety-nine multiplication table that modern primary school students are familiar with, and wrote down the four operation symbols of addition, subtraction, multiplication and division below.

After writing the ninety-nine multiplication table, Du Chengfeng wrote several multiplication equations with more than three digits on another piece of paper.

The multiplication equation of one or two is too simple to express the shortness of this modern arithmetic and does not achieve the effect of shock.

So just write down a few hundred digits or more of the equation to calculate it for the two of you.

In order to achieve better results, Du Chengfeng first pushed the formula in front of Shopkeeper Lu and said, "Shopkeeper Lu, how long does it take for such an equation to be calculated by your method?" ”

Looking at the three-digit equation on the paper, Shopkeeper Lu frowned and looked very embarrassed. "Little brother riding the wind, I estimate that it will take at least half an hour or more." Shopkeeper Lu said embarrassedly.

In the early Tang Dynasty, there were not many people who really attached importance to mathematics, even if they had the best mathematical foundation, Du Chengfeng estimated that it would take half an hour for such an equation.

So the half quarter of an hour that Shopkeeper Lu said is actually very good.

Li Xiaogong was also a little embarrassed to look at it, this kind of multiplication formula with more than 100 digits was indeed about half an hour as far as he knew.

"Alright, now I'll do the math for you." Du Chengfeng pulled another piece of paper, replaced the formula just now with the multiplication formula of Arabic numerals, and in less than half a minute according to the multiplication formula, the calculation result came out.

"So fast?" Shopkeeper Lu was dumbfounded, his mouth wide open, and he didn't know how to describe the shock in his heart.

Li Xiaogong was also surprised, this calculation method was completely beyond his cognition.

Du Chengfeng looked at the stunned Li Xiaogong and the shopkeeper Lu, and said slowly: "This is the quick way to calculate Arabic numerals, according to the method I said, with that mantra, even an 8-year-old child can achieve this speed." ”

"What? Can an 8-year-old child be? "Shopkeeper Lu was hit again.

Li Xiaogong thought in his heart: If Guozijian can teach this calculation method and formula, what a sensation it must cause.

No, after a while of cooperation and talks, this matter will be reported to the emperor immediately.

"Shopkeeper Lu doesn't need to be surprised, as long as you memorize the mantra on this piece of paper and learn this calculation formula, ordinary people can have this speed. Rest assured, I'll teach you after the cooperation is discussed. Du Chengfeng said calmly.

Hearing Du Chengfeng say that he would teach himself this calculation method in a while, Shopkeeper Lu was so excited that he was about to burst into tears.

In addition to being excited, of course, he didn't forget to put the ninety-nine multiplication table written by Du Chengfeng just now into his arms.

Seeing this, Du Chengfeng smiled and said, "Shopkeeper Lu, there is something better, do you want to learn?" ”