"Official, the slave family also wants to help......" Hong Tao was not only alone in the study, but Lian'er always followed. She was also present when she was discussing in the Flying Feather Hall just now, and Hong Tao didn't deliberately hide it from her.

"A hand? That's not enough, you have to have two arms. Come, first pinch my shoulder for the official, and then go and tell the lady that I will go back to the room later, so that she will not wait. In the future, officials will often go out and be away from home, and you will serve your wife well, let her think less, eat more, and play more, which is the greatest help to the officials. Also, don't talk to anyone but Mrs. about the affairs of the house, understand? ”

I don't have any worries about this little girl Hong Tao, don't look at her small, but she has a lot of eyes, and ordinary people can't afford to fool her. She never regarded herself as an outsider, and from the bottom of her heart, she considered herself a member of the Pony Mansion, which was justified.

"The slave family will plan to settle the accounts for the officials. Those people are unreliable except for the rich sister, and it takes a lot of staring at them. ”

While pinching the horse's shoulder, the little girl was still giving advice. She heard all the words in the Flying Feather Hall just now, half of them could understand and half of them couldn't.

But she knew that the horse was going to do a big thing, and there were still several things, as long as the things related to the horse mansion were naturally to be kept an eye on, and outsiders could not take advantage of it.

"Reckoning...... Well, it's a good job, but Mr. Bookkeeper still has to let Mrs. do it, so you can be a little shopkeeper. ”

As soon as Lian'er said this, Hong Tao suddenly felt that it was not appropriate to completely ignore the princess. This woman's temper is unusually gentle, but her mind is also heavy, she doesn't say anything in her heart, and she thinks about it all day long, so that she will think about it badly.

If I don't tell her anything, and I don't let her participate, I will inevitably have to repeat the same mistakes. The emperor only said that he couldn't let his sister follow him to do things that lacked virtue, but he didn't say anything and didn't let her know about it. Calculating the accounts should not be considered a lack of virtue, and the accounts in the house have always been controlled by the princess.

"Hehehehe, the slave family is going to tell Madame to prepare more account books......"

When she heard that she could be a little shopkeeper, Lian'er was very happy. In her opinion, it was a very fun game, and she wanted to start immediately, and she walked out of the study at a trot, and her shoulders were not pressed.

"Alas, it's ridiculous that the future of a huge country is in the hands of two women......

It's not all child's play to let Lian'er be the little shopkeeper, there will be more and more accounts in the future, so much so that she and the princess can't finish it without eating or drinking.

It will be difficult for this thief ship to get on, even if he agrees, can the emperor and the two prime ministers agree? Every move in my house will be transparent from today onwards, and I'm afraid someone will remember how many times a day I go to the toilet.

Hong Tao is so willing to be stared at, he must be unwilling, but he has to endure it if he is unwilling, who let us be a concubine, and when he is a relative, he must have the quality of being a relative.

However, he didn't intend to let others worry, and the next day he handed the princess a new account book with a pair of panda eyes, not bought outside, but painted by himself.

This book of accounts uses the modern method of credit and debit accounting, which is fundamentally different from the single-entry journal and three-column accounting method commonly used at this time. I can't say that I can't read it, but it takes a lot of hard work to understand it completely.

This is Hong Tao's character, when he encounters something that he doesn't dare to resist and can't resist, he just bows his head and pretends to be unwilling, always trying every means to cause trouble to others, and he is a thorn in his bones.

"Who is Arab?" The princess was blinded by the new account book that her husband had brought out, and she did not know what Arabic numerals were, thinking that they were relatives of the Pony family.

“…… I don't know ...... either," Hong Tao admired the princess's ability to associate.

"Listening to his surname, it shouldn't be a Song person, isn't it a blue hat who teaches Leye?" The princess still had to find out where the uncle, surnamed Allah, was.

Yici Le Ye Jiao is the ancient transliteration of Israel, in Bianliang City, there is indeed a group of Jews who do not know where they come from, and they have their own religion, because they like to wear a blue melon skin hat, they are called blue hat Hui by the Song people.

"It's not far off...... I never thought that the lady was so knowledgeable, so let's learn more words from the husband and the people. This little stick is 1, this little duck is 2...... "Whether the princess guesses right or not, Hong Tao has to say that encouragement is the premise for people to be interested in learning new things."

"I know this, it's like an ear, so it should be 3!" Lian'er naturally has to learn with the princess, to say that children's thinking patterns are indeed different from adults, and their imitation ability is super strong, Hong Tao just said 2, she thought of 3.

"Oh, lady, you have to work hard, I'll come back for the exam in the evening, if you learn slower than Lian'er, then you have to study for more classes at night."

I'm going out today, and I can't let the princess worry too much, just right, use these numbers to distract her, and at the same time have to talk about the reward and punishment system.

"Hugh wants to talk nonsense, go and ...... quickly" As soon as she heard that there was going to be an extra class at night, the princess's face turned red. This lesson made her love and hate, especially in front of Lian'er, then only hatred remained.

The first thing Hong Tao had to do today was to solve the problem of ink. It is not difficult to cast lead characters, and the lead alloy with the right hardness is not a big problem, the font cannot be cast so delicately, and the enlargement is not over, anyway, the current printing body does not stipulate how big the font is.

In the absence of proper lighting, a larger font size is better for reading. If you really want to bring the printed books of later generations to ancient times, it will not take a few years to produce thousands of myopic eyes.

Lead characters are not like woodblocks and mud tires, which can be printed directly with ink, but metal and water always do not work well together, and ink painting can't stay at all.

In ancient times, carbon black was used in ink, which was almost the same as the ash at the bottom of the pot, but the production process and raw materials were a little more particular. This raw material ink can also be used, plus binders and thinners, adjusted to a suitable ratio, basically a practical ink.

Of course, this kind of ink is too primitive to compare with the ink of later generations, let alone put it on a high-speed printing press.

How to solve these problems, Hong Tao didn't know originally, but the craftsmen of the Southern Song Dynasty had already given the answer with practical actions.

The adhesive is gelatin, or bladder gum. At that time, it was boiled with whale skin in Guangzhou, and the cost was very, very low, and the output was very, very large. I'm afraid there is no place to find so many whale skins now, but other animal skins can still be replaced, but the cost will be a little higher.

Thinner is simpler, it is a by-product of petroleum and is called mineral oil. In the Southern Song Dynasty, the Jinhe Empire had a special oil refining workshop, which could provide a steady stream of this oil.

Now Hong Tao is still powerless, the Northern Song Dynasty is a record of oil, and the production area is not too far from Bianliang, just on Shaanxi Road. But at present, I don't have the energy to start the petrochemical industry from scratch, and I don't have enough time and energy.

What to do? Like gelatin, mineral oil can be substituted, not so well but can be used. That is to replace it with vegetable oil, and Hong Tao happens to know one, that is, flax oil.

This thing was created by the Academy of Sciences of Frederich II, they did not have a petrochemical industry, and they looked at the printing technology of the Jinhe Empire, and after many experiments, they finally found a replacement, and it happened to be cheaper Hong Tao.

After two days of running, Hong Tao took Gao Cuifeng and Wasp to turn Bianliang City into a transparent way, and the sources of gelatin and linseed oil were basically done, so that the raw materials of the ink were complete. But that's not all, there is still a big problem, which is the drying of this original ink.

Due to the lack of desiccant and stabilizer, this ink cannot be used on ordinary paper, in which case the ink will be perineal to the back of the paper, the effect is unsightly, and the paper is wasted.

"Corn, potatoes, how can I run anywhere without the two of you!"

How to make ancient paper suitable for ink, there is a way, that is, brush the paddle. If you apply a layer of starch paste on the paper, there will be no front printing and force penetration of the back of the paper, which is called anti-reverse penetration agent in later generations. The raw materials that can be used to make starch are corn and potatoes, which are definitely not available in the Northern Song Dynasty, so you don't have to think about it.