[I fell asleep at night and wrote, and I didn't write it until now.] Let's see if we can catch up with a watch at noon]

"This is the Creature Tree?"

Su Song looked up at the picture hanging in the main hall in surprise, not only because it was the first time he had seen the method of using illustrations to classify, but also because Han Gang's classification entries were ingenious and too innovative.

Half a month after the edict was issued, Su Song arrived in the capital - this is also the reason why Bozhou is only a few hundred miles away from Kaifeng - and came to the "Compendium of Materia Medica" Editing Bureau to report to take office. And Han Gang had to explain the basic concepts of taxonomy to others once again.

There are two trees of animals and plants, and each tree has multiple branches from the bottom to the top, and each branch is constantly bifurcating and bifurcating.

The main branches are phylum, the sub-classes, and further down, the order, family, genus, and species.

The main branches of the plant tree are the phylum Seed Plants, the phylum Ferns, the phylum Bryophytes, and the phylum Algae. On the animal tree are the phylum Vertebrates, Arthropods, Molluscs, Annelids, and Protozoa.

The classification compiled by Han Gang is not exactly the same as that of later generations, but it is compatible with the understanding of living things in this era and is easier to explain. Just put the frame up first, and modify it later.

And Su Song was a little dumbfounded. After taking the two paintings off the wall and looking at them, I am afraid that the branches divided on them are not hundreds or thousands, which is a little too detailed. However, looking at the small characters, in fact, the branches that have written the words only account for a small part of them, and most of them are still blank, waiting to fill in the blanks.

Su Song looked at the two pictures carefully. He found the word orangutan on a small branch at the top of the animal tree, and traced back along this branch, which is the genus of apes, ape species, and the retrospection is the primate, and on the branch of the primate, there are monkeys, marmosets, baboons, etc., and the primates go back again, it is the mammalian class, and the mammalian class is the vertebrate phylum. In the branches of the phylum Vertebrates, there are all birds, birds, reptiles, snakes, amphibians, and fishes.

The naming of these compendiums makes people understand it at first sight - it is the main class of the footless snake, and it is puzzling how to name it as a reptilian program.

If you look at the plants and trees, it is also clear and clear.

This is by no means the answer that Han Gang gave on a whim, it must be the result of how many years it has been accumulated. Han Gang is not yet thirty, where did all this accumulation come from? Is it really heaven-granted? That's like a saint - a saint is born to know, and a sage has to learn from others.

"Like a book catalog, the subset of classics and histories is only a large scale. In order to be able to examine in detail, it must be divided into more detailed layers. Take the Department of History as an example, the history of dynasties such as the Book of Han and other dynasties; the chronicle of the "Spring and Autumn Period", as well as the "Zizhi Tongjian"; The "Warring States Policy" ...... "Three Kingdoms" of the country-specific body can actually be regarded as a country-specific body. Han Gang used an analogy to explain to Su Song the reason why his classification was so detailed, "For example, geography, roads, states, counties, and townships, layer by layer, divide the Great Song Dynasty, which is thousands of miles long, into clear and clear divisions." The more finely divided, the more convenient it is to substitute some medicinal materials in the formula. ”

"Yukun, this truth is also understood by the foolish brother. But in this classification, there must be a reason and a reason. Why is it so divided, and how does this classification come about? And medicinal materials are not only plants, trees, insects, birds, fish and beasts, but also gold, earth, water, dansha, mercury, rootless water, how to classify these? "Su Song has a great friendship with Han Gang, and he doesn't need to avoid taboos when he speaks, so he can speak out.

Medicinal materials are divided into biological and mineral, but they are still mainly herbs and trees, so they have the name of materia medica. There's nothing to say. But how to divide it and what rules to divide it are that Han Gang wants to explain in the "Compendium of Materia Medica". And Han Gang can be regarded as confident.

"The division of animals and plants, and the origin of biological trees, are just the induction and classification of the essential characteristics of plants, trees, insects and beasts, such as monocotyledon and dicotyledon under the angiosperm phylum, which can be understood by looking at the seeds. Wheat, rice, and millet [sorghum] are all grain by grain in the mouth when eaten, and when they germinate, they also come out as a single leaf. And bean stalks, one grain is two petals. And the seeds of this citrus fruit, peeled off, are also two-petaled. Han Gang peeled off a Wenzhou citrus on the table, got a seed out, and separated it to show Su Song, "When such a seed germinates, these two cotyledons come out first...... In fact, as long as you soak soybeans and rice in water, you can see the Tao at a glance. ”

Han Gang took a sip of tea, moistened his throat, and saw Su Song listening attentively, so he continued, "As for the genera of metal, earth, and water, there is also the theory of elements. For example, green alum, which is iron. Cholelum, on the other hand, is a copper genus. Therefore, after the bile water is smelted into copper, it is green alum water. As for dansha, it is a mercury genus, and dansha is indispensable for refining mercury. The use of sulfur mixed with mercury can produce dansha, which can be seen to be sulfur amalgamation in essence. ”

Han Gang wanted to temporarily include biology and classify the raw materials of medicinal materials. However, it is also a good thing to incorporate the elementalism of chemistry into it.

After pondering for a long time, Su Song nodded lightly. But soon he questioned again: "It's just that Yukun divides animals and plants into six levels of phylums, families, genera, and species, and classifies them layer by layer, isn't it too much?" All things in heaven and earth, even if only one percent of them are cataloged, it is not something that can be completed in a few decades. Yukun, it's a bit greedy to do this. ”

"Divide its categories and belong, understand its source, so that the world will not be confused by error, this is Han Gang's original intention. However, the Compendium of Materia Medica is a pharmacopoeia, and it only needs to classify the medicinal materials that have been used in prescriptions. As for the classification of other animals, plants, and minerals, we have to wait for the future to take our time, and Han Gang did not intend to do it all at once. That would be too arrogant, Han Gang knew that he was not a sage, and he couldn't do this. ”

Although Han Gang has a headache for the specific sub-classification, as long as the rules are set, it is enough. Although the memories from later generations are superficial, they are also the crystallization of the efforts of countless people over hundreds of years. As long as the truth is explained, there will never be a problem in convincing most people. What Han Gang has to do is to put forward the principles, show examples, and let future generations supplement the rest. And the pharmacopoeia of "Compendium of Materia Medica" is the example that Han Gang wants to show.

Su Song lowered his eyes, thinking carefully about Han Gang's words.

What Han Gang said, of course Su Song understood. But Han Gang's style of acting is more clear to him, and what he gets on the surface is always just the tip of the iceberg. As he said in Buoyancy Tracing the Source, the part of the ice floe hidden under the surface of the water accounts for ninety percent.

Han Gang's real intentions are not just about compiling a pharmacopoeia. Killing two birds with one stone and three birds are all in his calculations, and plate armor and spaceships are the best examples.

Su Song raised his eyes and looked at the calm and peaceful smile three feet away, but he thought about how much scheming was hidden under this smile.

……………………

"What is Han Yukun's plan?" Yang Shi's eyebrows furrowed, "Dare to ask Mr. What do you mean by this?" ”

The night breeze outside the window is blowing, it is almost autumn, the heat of the day is swept away by the night wind, no longer like half a month ago, at night, it is still stuffy and unbearable.

Autumn has finally arrived.

Cheng Hao took his gaze back from the shadow of the swaying tree outside the window, and looked at You Xing, Yang Shi, Xie Liangzuo, and Lu Dalin in the room. You, Yang, and Xie either frowned, or looked puzzled, and they couldn't think through Han Gang, only Lu Dalin had a straight face and didn't say a word.

"Uncle Yu knows Han Yukun's temperament the most." Cheng Hao led Lu Dalin to speak, "I think I know it in my chest." ”

"Wu Jun Lu Ji's "Poems". Lu Dalin cherishes words like gold.

Referred to as "Poetry Shu", "Mao Poems, Grass, Trees, Birds, Beasts, Insects, and Fishes", from the hands of Lu Ji, Wucheng Ling, of the Eastern Jin Dynasty, is one of the main commentaries on the study of the Book of Songs, specifically for the animals and plants mentioned in the Book of Songs. Yang Shi and Xie Liangzuo are also Confucian scholars who have penetrated the Five Classics, and they have already studied it thoroughly, but they don't understand what Lu Dalin means by this, and what it has to do with Han Gang's scheme. Only You Xing's body was shocked, as if he was inspired and thought of the answer.

Taking the looks of the disciples into his eyes, Cheng Hao smiled softly and looked at You Xing, who seemed to have understood. You Xing immediately understood, and said to Yang Shi and Xie Liangzuo: "I don't know if Zhongli and Xiandao have read Han Yukun's "Gui Window Cong Tan". ”

"Of course." Although it is a work of the opposing school, only by studying it can we find out the flaws in it and refute it.

"What about the 'son of the moth' among them?"

"Ahh You Xing's words were broken, and Yang Shi and Xie Liangzuo were suddenly stunned.

Yang Shi slapped his palm, "I see!" ”

Xie Liangzuo also exclaimed: "What a Han Gang!" ”

Lu Dalin had a calm face: "Han Gang's mind has always been deep and unfathomable, and it is difficult to see all his intentions until he uncovers the mystery. However, from his actions in the past, he can guess five or six points. In the Book of Songs, there are 114 kinds of plants and trees, 60 kinds of birds, beasts, insects and fish, and moths and moths are only two of them! ”

Lu Dalin's voice was heavy and pressed people's internal organs, Han Gang has always liked to draw salaries from the bottom of the kettle, and he intends to edit the pharmacopoeia, which can be regarded as his usual method.

Wang Jiefu entered "Words Say" this time, and there should be more of his son-in-law's power. Han Yukun has brought the means of learning things to the fullest, and this time will be no exception. Cheng Yi, who had been silent and was sitting cross-legged on the couch, suddenly spoke, "But it's still "Yi" at all." Although "Poems" and "Books" are heavy, they are not as good as "Yi" in terms of the origin of heaven and earth and the principles of heaven. ”

The four disciples of You, Yang, Xie, and Lu all nodded yes, and in order to cope with the increasingly fierce school disputes, Ercheng had compiled their interpretation of "Zhou Yi" into a book called "Yi Chuan". But it is necessary to compete with Xinxue and Qi Learning.