Seeing that Su You was covered in dust, Xue Xiang smiled and said, "I'm afraid you will be greatly disappointed if you are to be seen by the oiran lady of Xijing Jiaofang's office like this."

Su You smiled embarrassedly and held up his hands: "I have met Mr. Xue."

Xue Xiang asked his servants to bring warm water and a handkerchief: "Wash your face first, and then we will discuss it in detail."

After Su You finished washing himself, he came to the hall and said, "It has been almost two months since I took office, and I just came to visit Ming Gong and pray for Ming Gong's forgiveness for my sin of neglect."

Xue Xiang smiled and said: "If all the transshipment envoys from various states in Shaanxi were as good as Mingrun, I would be extremely happy."

After Zhike served tea, Xue Xiangcai said to Su You: "Military affairs are Lao Cai's responsibility. I never ask about it. However, the food and livelihood of hundreds of thousands of Shaanxi troops are all on my shoulders. Now that you are here, Mingrun, I feel relieved."

It’s a big cut.”

Su You cupped his hands and said, "I don't dare. I have to ask Duke Ming for more advice."

Xue Xiang said: "I came a year earlier than you. I didn't have time to do other things. I only did one thing: making salt and preparing enough for ten years."

Su You said: "Mr.

Xue Xiang shook his head: "What a pity. Renzong Mountain Mausoleum, the Central Committee moved to detain Xiezhou's 200,000 gold salt."

Su You also heard about this: "This is a breach of trust by merchants. It is only thanks to Minggong's vigorous defense that Yanyin's credibility has been preserved. If Yanyin loses its credibility, it will be a huge disaster, and Shaanxi's economy will collapse immediately."

"

Xue Xiang stretched out his hand and touched the cover of "On Finance": "Unfortunately, there are too few people in the court who understand this... The concept of credit currency astounds me. I am not as good as Zhang Gong in thinking..."

Su You smiled and said: "The so-called heroes think alike, and Ming Gong's approach is actually the practice of Zhang Gong's theory."

Xue Xiang chuckled and said: "It is said that it is easy to know but difficult to do, but to reach the stage of Zhang Gong, it is the sublimation of practice, which is even harder."

Su You said: "Everything has its own reason. People can become heroes of all kinds because they can refine and prove each other in knowledge and action, find out the truth from them, and lead each other to progress until today."

Xue Xiang's eyebrows twitched: "Mingrun explains it carefully?"

Su You said: "Meishan School generally believes that unproven so-called 'reasons' should be divided into two types. One is called axioms, and the other is called conjecture."

"Axioms are truths, and they are divided into two types. One comes from the development of human reason and desire, and is a principle that everyone follows. For example, parents should raise children, and children have admiration for their parents."

"The other is the experience gained from long-term repeated practice, which does not need to be proved, such as one plus one is two; for example, there is and is only one straight line between two points on a plane..."

"Conjectures are more complex and advanced than axioms. But before they are proved, they may be true or false. They need to be proved by the axioms before they can be turned into truth, and then they can be used to prove other conjectures, such as whether a person is born with a certain relationship with his parents.

The heart of admiration, to prove a person's morality, comes from filial piety; for example, using the formula for calculating the area of ​​a rectangle to prove the Pythagorean Theorem."

"Distinguish the authenticity of each conjecture one by one, and then accumulate them one by one to form a system, which is to study things and gain knowledge."

"With the accumulation of knowledge, we can verify more difficult conjectures and gain clarity to higher-level truths."

"That is why doubts cannot be understood without formulas; reasons cannot be understood without knowing; truth cannot be proved without principles."

"That is to say, it is useless to just think and talk, you have to distinguish the truth and eliminate the false through practice. Practice, conjecture, prove, and then use it in practice, just like climbing up the tower on a ladder, spiraling higher and higher.

"

"This is called the unity of knowledge and action. Both are equally important and cannot be neglected. Therefore, Duke Xue's actions are not inferior to Duke Zhang."

"Of course these are just the beginning. Su You gained a lot from the theory of work and number. However, the theory of human governance is not summarized enough. We need to borrow the wisdom of the great masters of the Song Dynasty and let us all explore it together."

Xue Xiang was very curious: "What are the truths about the principles of human governance obtained by Mingrun?"

Su You felt ashamed and said: "Su You is a stupid person. I only get two things. One is that people like their clans and live in groups; the other is that children are like their parents, and young children will admire them. The third is that there are so many people that they always outnumber the first two."

A reactionary example."

Xue Xiang nodded: "I understand somewhat. Mingrun's so-called truth can be said to be the most simple and great principle. All other principles must be based on this and must be proven to be true."

After saying that, he clasped his hands and laughed: "Very good. The core of Shu studies today can be summed up in eight words: the unity of knowledge and action, and the truth can be proved."

Su You was shocked: "The core of these eight characters, Ming Gong, can be described as an outline!"

Xue Xiang stroked his beard with some pride: "With Mingrun's remarks, I will not be ashamed to see Mr. Zhang again!"

This old man was also quite interesting. The two of them used the theory of salt in financial theory as an extension and started a discussion on studying things to gain knowledge.

This thing was actually inspired by Su You to write it by Zhang Fangping. Many of the words and financial concepts were written by Su You himself, so there were some things that the old man couldn't understand, but he could immediately understand them after Su You explained them.

The two talked about theory for a while, and the old man became more and more convinced of Su You's ability, and then slowly turned to practice.

Xue Xiang said: "It's a pity. In order to deal with the court, I had to use the stored salt to satisfy their appetite and keep the salt industry. After ten years, half of it was empty in the blink of an eye. Many important things can't be done."

Su You said: "Actually, it doesn't matter. There are big ways to use it, and there are small ways to use it. Besides, it can be accumulated for five years, which is already a lot."

Xue Xiang shook his head and said: "This matter still depends on your Shu banknotes. I can only say that I won't hold you back. In fact, the distribution of salt salt every year has basically been determined, and I can't move too much."

Su You cupped his hands and said, "Ming Gong, you actually have a lot to do."

Xue Xiang asked: "Why?"

Su You took the pen and began to write on the paper: "Ming Gong, Su You thought about a few things before, please tell me and discuss them with Ming Gong in detail."

Xue Xiang nodded.

Su You said: "The difficulty of Shaanxi's salt policy is to prevent smuggling and crack down on Xixia. This was the policy of the previous dynasty, but practice has proved that relying on prohibition does not work."

Xue Xiang said: "Exactly, Xixia green salt is cheap and sweet in taste. Jiezhou salt is not as good as others. There is really no way to stop this."

Su You said: "The so-called sweet taste of Xixia salt is actually not bitter. Shu salt was also bitter before, but after being refined into snow salt, the bitter impurities in the salt can be removed. In this way, Qing

The advantage in taste between salt and salt is eliminated.”

Xue Xiang frowned: "But the cost has also gone up. Not only has the output decreased, but the increase in technology will inevitably lead to an increase in cost."

Su You said: "That's right, but Ming Gong, what was lost is what was harvested in the east, and the impurities extracted from the salt are not waste. We can use them elsewhere!"

After speaking, he took off the leather bag and handed it to Xue Xiang's hand: "Ming Gong, look at this bag."

Xue Xiang took it and dropped his hand suddenly: "Mingrun, your bag is really not light. It contains everything."

Su You joked: "It's not copper coins anyway."

After speaking, he smiled again: "They are all small tools and stationery, but this is not important... Mr. Xue, look at the leather in my bag. The quality is not up to that of ordinary leather, right?"

Xue Xiang rubbed the leather: "Indeed, but is it too soft?"

Su You raised his feet again: "There are also hard ones, such as these leather boots."

Xue Xiang was a little confused: "Mingrun, what are you going to say?"

Su You took out his notebook from the bag and pulled out a piece of paper: "Mr. Xue, look at this."

Xue Xiang reached out and took it, feeling even more confused: "This... looks a bit like Taoist runes?"

Su You nodded: "Yes, this is an analysis of the proportion of salt components, which was done by Zhang Tianshi, the Jade Bureau Guan... But this is not important, the important thing is here."

After speaking, he raised his hand and said, "Here is snow salt, the main ingredient in salt salt."

Then he pointed to the ones below: "The rest of the things together are bittern, and one of the important ingredients, this rune, refers to Glauber's salt!"

Xue Xiang looked at the list and marveled: "Xiao Tianshi has studied physics to this extent? He is really peering into the secrets of heaven! Mingrun, what kind of power does this rune have?"

Su You secretly rolled his eyes: "This is just a component analysis, ah, just like a medical prescription!"

Xue Xiang nodded to express his understanding, but felt a little regretful: "There is no magic power... no wonder there is no Du Gong seal..."

Su You was at a loss for words: "Uh... this... has no magic power, but it has a function! Glauber's salt has many uses, but in Shaanxi, its biggest use is to tan leather!"

Xue Xiang was stunned for a moment: "Leather? Leather like your bag and boots?"

Su You nodded: "The important point of "On Finance" is circulation. The circulation of commodities, materials and money will bring about the rapid and reasonable redistribution of data."

"Compared with Xixia, the Song Dynasty was superior in economy but weak in military affairs."

"Use your own strengths to overcome the weaknesses of others. Mr. Xue, this is Sun Bin's method of racing horses."

"Nowadays, militarily, of course we can only take the defensive, but economically, we can definitely take the offensive!"

"All kinds of wealthy salt merchants can control the price of salt and seek profits, so why can't we? In fact, this matter can not only be used in shopping malls, but also in national wars!"

Xue Xiang stood up: "If the quality of salt solution is better than that of Xixia salt and the price is lower than that of Xixia salt, smuggling will naturally be stopped!"
Chapter completed!