Yuzhang and Changle have learned numbers with Yang Heng for a long time, and even some ordinary four-character calculations. Although they are not as good as Xiao Niang, teaching these people can be done. "Changle, look, you can teach the rest of the people. It doesn't need to be too difficult. You just need to recognize the thousand-character text first, and then teach some numbers. Okay, let's learn them all. I will insert some knowledge about investigating things and even chemistry from time to time."

It’s not that Yang Heng has nothing to do. He needs to explain some of the most basic knowledge to them in a few days, so that their research will be further improved. Moreover, Yang Heng has not set a long time for them to attend classes in the evening. In short, they still have their own work to do during the day, which is only half an hour, and they are still resting for a while, which means they only have two classes. These people can only instill in them, but they can’t teach them step by step, because they have been considered as a stereotype, and they can’t teach them as much as they teach them. It may be more patient than teaching them. Therefore, Yang Heng asked Yu Zhang to teach those who know the most literacy, which is relatively easier for them to teach.

"What, what did you say? That kid actually asked my two princesses to teach those mud legs," "Yes, your majesty, the two princesses seem to be Yang's numbers." The people behind Li Er already knew Li Er's temper. Once he got angry, as long as he diverted a topic and drew his attention, his anger would be gone. Sure enough, his effect was very good.

"I care about his numbers. Anyway, I can't let my two princesses teach those mud legs, what, what do you say, Yang's number, what is the difference between these Yang's number and the words we use?" Sure enough, Li Er's attention was still attracted, and he even cared about Yang's number. It would be fake to say that Li Er didn't know about this, but Yang Heng did not make a big splash and did not attract people's attention. Now it is only popular in the Yang family and the princess's mansion.

"Ah, I remembered it. Yang's number, Yang's number, I seem to have heard someone say it, who said it, Changle, no, if Changle says, then you must explain it clearly. Yuzhang, not Yuzhang, she doesn't have the patience to say anything to me. And if it is said, this is a new thing, she will definitely reward me. Who is that? Oh, by the way, go and call Li Zhi to me."

Li Er finally remembered that Li Zhi was Li Zhi. Li Zhi had been to Yang Heng several times, so it was possible that he learned any number. When Li Zhi told Li Er, Li Er did not pay attention to what Li Zhi said, but just listened. What important things can a child say in his mouth? As a result, the child said in his mouth something important.

"Father, your name is Zhi'er." Li Zhi ran in from outside with a jumping bang, "Come on, Zhi'er, tell me what is the Yang number?" Li Er had the essence of a big bad wolf and began to tempt Li Zhi.

"Ah, Father, you are asking Yang's numbers. I tell you that Father, this number is very convenient to use. In the past, the master taught me to count, but I couldn't remember it, and even those calculations felt very troublesome. But since I learned this number, it was a convenience, even the calculations were easy. Listen to me to memorize the formula, one plus one..." As expected, Li Zhi actually memorized the addition formula.

At first, Li Er was a little impatient, but when he heard it deep, he suddenly realized that the method of learning numbers and addition and subtraction was excellent. In this way, he wanted to know how to write this number even more.

"Okay, Zhi'er, you memorize it very well, you can write this word." "Yes, let me write it to my father." As he said that, Li Zhi actually took a piece of chalk from the palace maid next to him and started writing it for Li Er on the floor.

What are these? They are winding and twists and turns. Li Er was a little disappointed, but immediately his thoughts changed. "Father, let me tell you that this is one... Look, I will do an addition question, why don't you give me a question?"

"Okay, one, two, three, add..." "one, two, three, add... the number is..." This is a bit naive, but when Li Er saw Li Zhi calculating, he was shocked. This is so amazing. He could calculate a formula with just a few simple drawings. "You, me, ah..." Li Er originally wanted to blame Li Zhi for not telling him, but then he thought about it, what Li Zhi told him was that he was not paying attention.
Chapter completed!