It took Li Hao a full hour to talk about Arabic numerals to double accounting, which was twice as long as the time to count the accounts just now.

Li Hao was also helpless about this. Why can't he change his habit of being a good teacher?

Taking advantage of Cheng Yinyin's obsession with adding and subtracting Arabic numerals, Li Hao hooked his finger to the shopkeeper: "Where is my goods?"

"Li Countyzi, the goods have been loaded. Will they be delivered to your mansion?"

The shopkeeper was very low and fiddled with the account book he had been working on for a lifetime. He knew very well what the things Li Hao had just taught his lady meant.

Seeing that the shopkeeper had not mentioned the money, Li Hao was happy and nodded and said, "Send it to the village outside my city, find a man named Chen Meng and give it to him."

"What do you want so much pure salt? Is your family wanting to get involved in the printing and dyeing business?" The conversation with the shopkeeper attracted Cheng Yinyin's attention, and the little girl raised her head and asked.

Facing Cheng Yinyin's scrutiny gaze, Li Hao smacked his lips: "Yinyin, have you finished the five hundred exercises?"

Cheng Yinyin: "..."

In order to deepen the impression, Li Hao assigned 500 exercises on addition and subtraction operations, and the calculation amount was large enough for Cheng Yinyin, a beginner who calculated until the sun rose tomorrow.

Looking at the despair in the little girl's eyes, Li Hao finally realized the joy of the teacher when he was a child when he was a child. He didn't even think about it and was just a bowl of spiritual chicken soup: "Sound and sound, addition and subtraction operations are just the foundation. You must master them proficiently. These five hundred exercises must be done before sunset, otherwise you will always be a beginner in the calculation. Girl, you must remember that only by enduring hardships can you become the best."

"Okay, OK, Brother Dejian."

Cheng Yinyin's voice was willing to call Brother De Jian, but his tone made people feel a little nervous.

Five hundred addition and subtraction operations are mixed, and here we also include decimals, fractions, brackets, and finish before sunset... Cheng Yinyin is almost desperate.

But think about the scene where Li Hao had clearly counted all the accounts in the store in half an hour, Cheng Yinyin poured a bowl of chicken soup on his own: Yinyin, you can do it, you will never lose to him, at least your handwriting is much better than him."

Thinking of this, Cheng Yinyin lowered her head and continued to guide her five hundred exercises.

Li Hao said goodbye to the shopkeeper and took Lanling out of the Cui family to travel.

After leaving the Cheng family's territory and boarding the carriage, Lan Ling immediately changed her appearance and shouted excitedly: "Young Master, you are so amazing. You actually counted the accounts of the entire store in half an hour. You don't know how wonderful Miss Cheng's expression was at that time."

"Be calm, calm down." Li Hao looked mysterious: "These are just tricks, not worth mentioning."

"No." Lan Ling shook her head quickly: "In your opinion, these may not be worth mentioning, but they are not the case in others' opinion. Otherwise, how could Miss Cheng willingly call you brother?"

Alas, it seems to be.

The little girl did call out "Brother Dejian" just now, and her eyes were no longer filled with the hostility and contempt she used to be.

Is this the legendary knowledge changes destiny?

Oh, it seems that I have to be more restrained in the future, otherwise I will have so much knowledge. Today I will collect one fan, not every day, and you will become a fan?

What if someone asks me how many good sisters I have, how would I answer?

Li Hao daydreamed all the way to the village outside the city, and could smell a strong aroma of wine from a distance.

Twenty chimneys with thick smoke represent that there are about twenty stoves on the farm that are busy with the task of steaming wine.

After entering the village, Chen Meng had already come out.

This once honest and simple young man already had a managerial temperament, smiled, and saluted: "Young Master, you are here."

"Yes." Li Hao got out of the carriage and looked around and said, "How are the things being prepared?"

Chen Meng replied: "It's ready, quicklime, oil, sulfur and spices are all ready."

Li Hao was very satisfied with Chen Meng's execution ability and nodded, "Very good. There are still three thousand jin of pure salt to be sent later. You can arrange someone to collect it. When the things arrive, send someone to notify me."

"No, the little man will arrange for someone to go outside and wait."

...

...

Soap, something that Li Hao has been thinking about for a long time.

At first, he thought that the Tang Dynasty's chemistry level was not up to standard and could not handle pure salt, so he just put the preliminary preparations aside.

But unexpectedly, during a chat with Li Chengqian, I accidentally learned that the Tang Dynasty had pure salt, and there was a natural pure salt mine in Tongbai County, Henan Province.

Li Hao was overjoyed to learn about this news and decided to join forces with Li Chengqian to ask him to purchase animal oil on his behalf.

If it weren't for the sudden outbreak of the epidemic some time ago, it would have been full of Chang'an at this time.

The shopkeeper of the Cheng family moved quickly. Shortly after Li Hao arrived at the village, Sanqianjin Chunxian arrived.

Li Hao didn't ask anyone, so he found an empty yard alone to start the stove and just made a fuss.

According to memory, quicklime and pure salt are first put into a stove to make it salty, and then add animal fat, sulfur, and spices, and continue to boil until the things in the pot become viscous, remove the heat, cool and cut.

An hour later, Li Hao was filled with brick-sized sulfur soap.

"That... Chen Meng, do you want to take a shower?" Looking at a bunch of things that emitted a strange smell, Li Hao was a little confused whether this thing could be used.

Chen Meng was also hesitant, took a look at the iron pot that had obviously become thinner, and finally shook his head firmly: "Young Master, I just took a shower yesterday, it was very clean."

Turning around and looking at Lanling, forget it, the little girl is slippery, what if she washes her skin away?

Finally, Li Hao flashed his mind and put the sulfur soap into the water to melt it, and then threw another piece of sheepskin in it.

In a blink of an eye, small bubbles appeared on the sheepskin.

I went there, the fire was too much salty.

Li Hao's mouth twitched.

Chen Meng looked at Li Hao with lingering fear. The young master was indeed not the young master, and he was still unreliable as always. Fortunately, he didn't listen to him taking a shower just now. If he went there, he probably wouldn't have any idea of ​​getting married again.

Li Hao rubbed his hands awkwardly and comforted: "Chen Meng, people say that failure is success. Young Master, I think this is right. At least we have the appearance of sulfur soap, right? Next time, just put less quicklime and pure salt. Young Master is confident that he can succeed in one go. How about it, are you confident in the young master?"

Chen Meng: "..., Master, I have confidence, but can we not take a shower?"

Li Hao: "..."
Chapter completed!