As for the specific diet and anger, Zhang Lao didn't say much, almost just let Xu Guangling understand this term for the time being, and then today's lecture, well, seriously, it is a lecture, and if you say it casually, it is nagging, even if it is over. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

Today, Zhang Lao popularized the knowledge of colds for him, and then tested his understanding of Chinese history by the way, haha.

Xu Guangling has decided to take "Chinese History" as an elective course for a period of time to come. It's not that he wants to do what Zhang Lao likes, but Xu Guangling feels that if he still comes to Zhang Lao like this to listen to lectures in the future, historical knowledge may be very needed.

Let's take it for today.

If he didn't have an understanding of the interaction between the ancient Central Plains and the northern nomads, Zhang Lao's explanation would definitely not be like this. ――What would that look like?

Xu Guangling doesn't know, but there is a certain certainty, that is, it is definitely not as good as it is now.

His performance cannot be said to be very satisfactory to Elder Zhang, but generally speaking, it should still be qualified.

However, "qualified" has never been Xu Guangling's requirement, as I said before, not only "qualified", but also "excellent", "perfect" or close to perfection is. But Xu Guangling didn't demand himself too much, just like today's incident, it is acceptable to be qualified.

After all, it was quite a good thing that he had this knowledge reserve when it happened suddenly.

But today is today, and the future is the future, if it is still maintained at a qualified level in the future, it will definitely be something that Xu Guangling cannot accept. Therefore, according to the needs of Zhang Lao's description, it is necessary to carry out corresponding additional supplementary classes in a timely manner, which must be put on the agenda.

After the lecture, when Zhang Lao went to make tea again today, Xu Guangling followed, and then took over Zhang Lao's work in a timely manner, Zhang Lao did not stop him, and let him come with a smile.

did not enter the study again, the three of them just sipped tea in the living room as a rest.

And at this leisure moment, Xu Guangling remembered how he felt when he practiced the four moves and one style today, so he asked Mr. Chen: "Old Chen, when I practiced the style you taught me yesterday today, some of the feelings in my body were particularly obvious, is there anything I need to pay attention to?"

Xu Guangling said, and then described his practice feelings in more detail, of course, the most important thing is that he seems to clearly feel the flow of qi and blood in his body.

Xu Guangling asked Mr. Chen when he said this, because Mr. Chen taught him, but after listening to what he said, it was Mr. Zhang who spoke: "Humble words, I will answer this question for you, you go outside the door first to get a leaf and come back." ”

Xu Guangling was slightly surprised, but immediately got up and obeyed.

And after Xu Guangling went out, to be precise, when he turned his back to the two old men and walked towards the outside of the small building, in the living room, the two old gentlemen glanced at each other, and their eyes showed a deep shock, and even, as a "generation of grandmasters", Mr. Chen had obvious envy in his expression, as for Mr. Zhang, not to mention.

Then, Mr. Chen smiled bitterly, while Mr. Zhang was helpless.

The next moment, the two old gentlemen turned their heads in unison, followed Xu Guangling's figure with their eyes, watched him walk out little by little, and watched him come in step by step.

Walking into the living room under the watchful eyes of the two old men, Xu Guangling was a little uncomfortable, but he didn't think too much about it for a while, "Elder Zhang, do you think these leaves are useful?"

Zhang Lao asked him to take a leaf back, because he didn't know Zhang Lao's intentions, so Xu Guangling simply took three pieces, one was all green, one was withered yellow, and one was half green and half withered. At this time, seeing his little cleverness, the two old men suddenly had a sense of amusement, and Zhang Lao couldn't help but shake his head slightly, and said with a smile: "Okay, this one will do." ”

He reached out and took the half-green and half-withered one from the three leaves.

After Xu Guangling sat down, Zhang Lao said slowly: "Humble words, biology is divided into three categories: microorganisms, plants, and animals, and you should know it. ”

Xu Guangling doesn't know much about biological knowledge, but he really knows this. ――If he didn't even know about this or forgot about it, all his biology teachers in junior high and high schools would have tried their best to find him if they knew about it.

Seeing Xu Guangling nodding, Zhang Lao continued: "We won't mention microorganisms. Plants and animals seem to be completely different, but in fact, they have a lot in common, and there are many creatures in nature that have both characteristics. ”

At this time, Zhang Lao did not give an example, probably considering that even if he gave an example, Xu Guangling might not know much about it.

But Xu Guangling still nodded at this time, indicating that he understood, and also took the initiative to put two examples for Zhang Laoxian, indicating that he really understood: "Zhang Lao, man-eating flowers and flytraps should be the kind of creatures you are talking about, right?"

Hearing him say this, Zhang Lao smiled and nodded, and then said:

"Plants and animals are just a kind of expediency division made by the scientific community up to now in order to make a better distinction between living things, and it is expediency, so seriously, it is not rigorous. ”

"Just as we call a vegetable that can be eaten raw 'lettuce' now, we only call it expedient. Because if there are a lot of vegetables that can be eaten raw in the future, and this is inevitable, what should we call them then? You can't call them 'Lettuce No. 1' or 'Lettuce No. 2' and keep going down like this, right?"

Xu Guangling laughed.

"To put it mildly, I am talking about this to tell you that the difference between plants and animals is not as big as most people think, let alone two completely different categories. Essentially, they have more in common. What does this mean? It means that the case of plants can sometimes be applied to animals and vice versa. ”

"There used to be news that a tree was sick and people gave it a 'hanging needle', and it was cured of the disease in this way. Have you heard of this news?" asked Elder Zhang.

Xu Guangling had really seen such news on the Internet, and it seemed that there was more than one case, so when he heard what Zhang Lao asked, he nodded again.

"Okay, then we can get to your question now. Zhang Lao said, and then, he shook the leaf he had just taken in his hand, "Humble words, look at this leaf, these veins on it, if you compare it with people, what should they correspond to in the human body?"

This is simply asking Xu Guangling as a little pot friend in kindergarten!

Xu Guangling smiled slightly bitterly, but he still didn't dare to answer too surely, it didn't matter if he was slapped in the face, the key was "knowing is knowing, not knowing is not knowing", and talking without knowing is not a good character, so although he is very sure, he still said in a questioning tone at this time: "Blood vessels?"

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Thank you for the recommended ticket support of "Double Fish Boat".