With the deepening of Dong Ce's teaching, he found that although the students' receptivity improved, it was also more difficult to understand his words, after all, he was a blunt person, and it was difficult to determine the truth or falsehood, and the artifact of Yanjiao in his mouth was too ethereal and suspicious.

However, when Dong Ce unveiled the three-ball instrument that he had spent five nights making, the students were surprised.

This three-ball instrument is modified from a large lamp, the sun in the middle is naturally a round lantern, there is a copper ring on the lamp, a copper bar stretches out on it, and folds upwards from a foot away, and there is a copper ring extending out, like a branch branch, respectively, holding up a fist-sized mud ball and a thumb-sized inferior jade ball, which represents the earth and the moon.

Dong Ce ordered someone to block the window with a black cloth and light the candles, and suddenly, the students clearly saw that as Dong Ce pushed, the two spheres rotated around the lantern, and at the same time, they also discovered that not only the moon was full and missing, but even the earth was alternating between light and dark.

"Sir, can you let the students take this thing back and study it in detail?"

Before Dong Ce could speak, another student hurriedly said: "Sir, tomorrow is the end of the ten days for students to come here to study, I heard that Mr. did not charge a penny from Taixue, but taught for free, the students admired it very much, but the so-called sitting and eating empty, how could Mr. let Mr. teach at his own expense, but the students also know that Mr. has compulsory education in the teaching, and no money can be collected, but the books used by the students must be purchased from the college, and the students plan to continue to study here in the future, this is a little bit of the student's heart, please Mr. Be sure to smile!" ”

This student suddenly respectfully handed the entire money bag to Dong Ce, but the rest of the people were stunned, but soon they all reacted and scolded this guy for being very thick-skinned, obviously paying for the three-ball instrument!

These students who are not the children of the scholar clan, casually take out dozens of hundreds of taels are trivial, and Dong Ce's three-ball instrument is very cheap, less than three taels of silver, but it takes a lot of thought, after all, he is purely handmade, at the beginning he also wanted to make a complicated point, it is best to be like later generations, let the sphere rotate to form a law, but this is too difficult, the earth rotates once, the rotation is three hundred and six, the moon has to circle the earth twelve times, its gear structure is complex, not a short time can be figured out.

Dong Ce didn't have the silver under his hand, but shook his head and said: "This thing is not for sale for teaching purposes, but if you like it, I will ask you to make some and sell it to you." ”

After hearing this, everyone could only give up, but they still urged Dong Ce to let the craftsman make it quickly.

Dong Ce sneered in his heart, sell you the Trisphere today, and sell you the Dou Rotating Astrolabe of the top ten planets in the solar system tomorrow. Just selling textbooks is enough to maintain the expenses of the college, so why care about that tuition.

Dong Ce continued to explain the operation of the three-ball instrument, then asked people to lift the black cloth, and then left the three-ball instrument for them to play with themselves, then walked out of the left room of No. 1, went to No. 2 to check, and made sure that the teacher inside was teaching poor students to learn characters according to his teaching method, and then went to the right room to take a turn.

When he returned to the patio, Dong Ce glanced at the sundial placed in the center, and found that there was still a moment before the lunch break, so he hurried to the backyard residence, at this time Fang Shuwei was in the kitchen, since the last time she fell ill, for some reason, she has become more woman!

Let Dong Ce, who had just entered the kitchen, not only smell the aroma of rice, vegetables, but also the fragrance of his daughter!

"Brother Dong came here so early, isn't he hungry."

Fang Shuwei was dressed in a white fur robe, which complemented her fair face and the snow on the eaves, looking like a goddess on Xuefeng Mountain, cold and noble, but unfortunately, she was ruined by a cartoon apron that Dong Ce taught her to sew!

This apron is yellow all over, and a cute tiger head is sewn with rags in the middle, Dong Ce originally taught her to use waste and not waste a stitch and thread, but as a result, the apron was made, but she was reluctant to wear it, and in the end, Dong Ce deliberately got some grease pot ash on it, and she was very dissatisfied with wearing it.

"I don't have time for a lunch break, hurry up, I'll teach those bunnies when I'm full." Saying that, Dong Ce directly pulled a stool in the kitchen and sat down, looking at Xiaohu and Xiaopi in front of the stove on the side, very dissatisfied, where these two guys are lying warm, not only hindering Fang Shuwei's cooking, but also making themselves dirty, if Dong Ce doesn't bathe them later, when they arrive in the room at night, everything will be soiled by it.

But fortunately, this kitchen is much cleaner than other kitchens, after all, Dong Ce specially let people modify, there is no iron mesh door at the stove, and there is a chimney inside, and there is an exhaust fan above the stove, of course, there is no electricity, but you can step on it with your feet, and it was said that after Fang Shuwei got used to it, she found that the effect was very good!

After a meal, Dong Ce just arrived at the patio, and was immediately surrounded by several Taixue students who had just finished class.

Dong Ce, who had already expected it, explained to them the rules of the operation of the three-ball instrument, and proposed the place where the three-ball instrument needed to enter, so that they could also join in thinking about how to make the rotation consistent.

"Humph! Myths confuse the public! ”

Dong Ce was discussing with the students, and suddenly there was a cold snort behind him, and several people frowned at the same time, and saw a Confucian scholar in his forties and fifties coming to the courtyard, and behind him, there were several entourages with large bags and small bags to follow.

Dong Ce frowned, and when he didn't think who this person was, the students around him immediately stepped forward and saluted the Confucian scholars: "Students meet Zhuang Sicheng!" ”

Dong Ce understood as soon as he heard it, and his feelings were unlucky to be chosen by the Queen Mother. But how did he get here? Could it be that you're here to recruit students back?

However, Zhuang Su did not open his mouth to tell the student to leave, but handed a letter to an attendant, and the attendant handed the letter to Dong Ce.

Dong Ce's most annoying thing is this set, the left and right are for me, can you give it to me directly?

But after reading the letter, he smiled and understood what kind of mentality Zhuang Su had, if he didn't kill people, he would definitely be torn apart by him!

It is a blessing that one out of a thousand people can be mixed from Confucianism to Tai Academy, although they are all teaching, but one is a citizen and the other is an official, this gap is self-evident.

"Bachelor Zhuang can come, it's really the glory of our hospital!" Dong Ce said.

"Hmph, Master Dong doesn't need to be like this, I'm here to climb high!" Zhuang Su at this moment, where is there still yesterday's embarrassed appearance!

If it weren't for Dong Ce, he wouldn't have fallen into such a field, this was undoubtedly falling from the sky to the ground, so how could he have a good face for Dong Ce?

Dong Ce looked at Zhuang Su, who looked disdainful and resentful towards him, and smiled slightly: "Then dare to ask Zhuang Sicheng, oh no, Master Zhuang, what do you plan to teach when you come here?" ”

Zhuang Su was stunned for a moment, and then snorted again, and said: "It is the book of sages!" ”

Dong Ce's face turned cold, and then he said: "Please go back, my academy teaches everything, but I don't teach the book of sages!" ”

Ps: (Alas, the body is so uncomfortable, I slept at four o'clock yesterday, got up at eight o'clock, and then I had a headache and couldn't sleep, my eyebrows swelled to the bridge of my nose, and today I was dizzy, constantly sneezing, and my throat was inflamed, I was really depressed to death, and I could only wait for my body to continue to break out.) (To be continued.) )