Recalling the experience of the past few days, Pang Tong had the urge to tears in his eyes.

Later generations said that it was light, but after really getting started, I realized how difficult it was.

After all, he is almost clear about the alkali making process, or it needs to be heated, or it needs to be sitting, or it needs to be stirred, and every step is in order.

But this soap just says that it can be made with oil.

Lard or sesame oil? Concentrated alkali or light alkali? Does it need to be boiled and heated? Or is it just a mix to dry?

Pang Tong couldn't answer all kinds of questions, so he could only consult Kong Ming again, use different raw materials and different techniques according to the instructions, and choose the best according to his condition.

After sifting through all kinds of unreliable and failed practices, what was finally placed in front of Kong Ming was these white stone-like things.

Kong Ming tapped it with a small iron rod and listened to the sound of "Bangbang", and then naturally raised doubts:

"What's the use? How to use it? ”

"Uh......" Pang Tong suddenly froze.

After two days of forgetting to sleep and eating, I finally made this thing, and I was too excited to forget about this stubble.

Kong Ming is used to this, and according to past experience, the first thing is to work backwards from the name:

"Fertilizer has the meaning of abundance, but also has the meaning of prosperity, and soap has the ability to dye."

"From the name, the efficacy of this thing may be related to the coloring of Ma Ge."

However, if it is just dyeing, it should not be worth the trouble.

After all, judging from the tone of the juniors, it is enough to make a place rich for a hundred years The technique of rice paper is too troublesome, and the only explanation is that the value and efficacy of soap are far better than that of rice paper.

If there is speculation, then the next thing is to try one by one.

For Kong Ming, he had accumulated a lot of experience in exploring the relationship between land and crop acidity and alkali, so after he gave the order, more than a dozen pieces of cloth were soon sent here.

Hemp, arrowroot, and silk are all available, and plain dyeing is readily available.

Then Kong Ming took out a hard pen, opened the small book he was carrying, stood aside, and made a gesture of invitation to Pang Tong.

Pang Tong was self-sufficient, but to everyone's disappointment, the "soapstone" did not seem to have any magical effect on these clothes.

Dry rubbing doesn't work, try to add water and still doesn't have a special response.

After trying clothes of various colors and materials in turn, Pang Tong looked at his hands and was a little uncertain:

"It seems to be getting more than ever...... Cleaner? ”

Jian Yong, who was quietly watching from the side, also saw this attempt, and when he took off his blouse, he smiled and said:

"Na Shiyuan will try it."

Shicai and the lord entertained Xiahou Yuan for a banquet, and there were many stains on his clothes.

Soon, as the stains on Jian Yong's blouse disappeared like winter snow and sun, Kong Ming also wrote it down in the small book:

"It has the ability to dye it, but it has the effect of removing pollution, and it seems to be able to be used for bathing?"

Seeing that Pang Tong's hands were already white and red, Kong Ming faintly understood why this thing could be better than rice paper in the eyes of the juniors.

Xuan paper can be written, but hemp paper, bamboo slips and wooden slips can also be written.

Everyone likes to be clean, and there is probably no substitute for the effect of this soap.

Look at the Pang Tong over there who is still pondering the more useful role of this thing, and then look at the nearly one-person-high failure products piled up in a corner of this workshop, the hardships are known at a glance.

After taking two steps, Kong Ming became curious again: "What is this?" ”

In the other corner of the workshop is a pot of oil-like non-oily things, sticky, but faintly fragrant, making people feel refreshed and happy.

"This is the glycerin produced by making soap, and it works wonders."

"Glycerin?" Kong Ming repeated the name.

Pang Tong stepped forward and explained: "Because it has a subtle sweet fragrance, I wanted to call it sesame oil, but I was afraid of being confused with sesame oil, so it was called glycerin." ”

"As for the utility ......"

Pang Tong picked up a bowl of glycerin with a more mellow color, and led everyone to the outside of the house and walked nearly two hundred steps.

After Jian Yong protested, he carefully put the bowl away, and then took out a smoldering fire fold from his body, blew out the open flame, and threw it directly into the bowl from a distance.

With a "boom", a pillar of fire nearly one person high immediately rose from the bowl, illuminating the surprised expressions of several people.

Pang Tong took two more steps back, making sure that the flames would not affect him before explaining:

"This thing is flammable, far better than tung oil, and it will be of great use."

"And after it was made, he also gave a bottle to Dr. Zhang, who said that this thing may also be used in medicine."

For Kong Ming, what he saw in a short period of time today was full of surprises, and he couldn't help patting Pang Tong's shoulder vigorously and said:

"This soap and glycerin will be of great use!"

"With this thing alone, Shiyuan will go down in history!"

Listening to Kong Ming's approval, Pang Tong suddenly smiled and couldn't close his mouth.

Kong Ming couldn't help but be in a daze, feeling that Chang'an was afraid that he would have to re-establish the Ministry of Craftsmanship next.

Because there were not many things that needed to be busy studying at that time, the Gongqiao Department of Gong'an County also became extinct after Liu Bei and Kong Ming left for Chengdu.

But now Kong Ming feels that it is necessary to set up an engineering discipline in Taixue, after all, not to mention, this soap will change its efficacy, increase its color and sweetness, and it will be in short supply.

Glycerin is even more troublesome, since it already has such an effect, what if you add sucrose? What if it was made with gunpowder?

As well as what Doctor Zhang said can be used as medicine, all of these possibilities need to be tried and recorded by hundreds of people before and after.

So in the end, Kong Ming remembered the words of later generations and sighed:

"Knowledge can change a person's life, the fortune of the society, and the momentum of the country."

"If you want to create Ji Han, you should learn too much to go to the state and county of the world."

"Strengthening the country and rejuvenating the people should start with education."

Pang Tong Jian Yong deeply believes that such a truth does not need to be told by later generations, and they themselves are the most obvious examples.

……

It wasn't until the time came to August that Bu Qi finally turned around and left this Chang'an City with a tendency to sway.

Recalling the change of mentality before and after this trip, Bu Qi almost wanted to look up to the sky and sigh.

Sun Hou asked him to go thousands of miles to Chang'an to ask for a boycott of the army, which listed his sincerity, including but not limited to the reconciliation of the two families as before, the selection of men and women of appropriate age to marry and marry, the great plan to resist Cao through business, and the willingness to send troops to Hefei to aid Guanyunchang in Jingbei, etc., and each condition is also negotiable.

For example, if General Zuo is willing to give some money, grain and grass, it is not impossible for Jiangdong to respect the emperor's uncle......

But unfortunately, after several conversations, Buqi also summed up the current situation:

Sun Hou was full of sincerity, and General Zuo was not interested.

Although Bu Qi also knew that after the previous betrayal, Sun Hou's sincerity still needed to be put a question mark.

But thinking that Mrs. Bu had only been in the Marquis Sun's Mansion for less than a year, the expectations of the whole clan were on his shoulders, and Bu Qi could only talk about it.

Fortunately, in the end, Liu Bei still agreed to the request to strike the army, and Bu Qi guessed that maybe Lu Zijing detailed the pros and cons, or maybe Mrs. Sun still remembered Sun Hou's old feelings.

After all, the conditions for this strike are not harsh, and can even be said to be lenient:

Sun Hou only had to agree that Jiangdong would open up the river and Tianjin, and he would not interfere in commerce and trade.

That's all.

(End of chapter)