Time unconsciously entered the middle of the seventh month of the lunar calendar, more than a month has passed, and Zheng Yu's farm has changed dramatically compared to when he first came. It is estimated that the crops in the field are growing well because of the compound fertilizer that is being tested. Previously, a group of displaced people were accommodated, so that other workshops except the glass workshop were expanded in scale, and all of them brought a factory name, and the output increased significantly. The most obvious change is that the adobe houses in Zhuangzi are gone, replaced by rows of concrete two-story buildings, and the steel bars cannot be made, so Zheng Yu found another way, using thick steel sheets to connect to make a frame, standing in the dug foundation, and then directly pouring concrete, saving time and effort. The house built is the top of the era in terms of warmth, fire prevention, and safety. The roads in Zhuangzi are hardened with cement, and trees are planted on both sides of the drainage canals. From a distance, the whole Zhuangzi looks more like a small town in later generations, without a little of the atmosphere of an ancient village.

For the future planning of Zhuangzi, Zheng Yu sacrificed some arable land, expanded the entire village wall by more than 100 meters, and planned to build a concrete wall four meters high and two meters wide, also with a steel frame as the bone. Once this village wall is built, any siege heavy weapons of this era will become an ornament in front of it. Now the foundation of the new village wall has only begun to be dug, so the old low village wall is still being used.

The escort team has also been expanded from the previous thirty to fifty people, and for the time being, the weapons of the previous martial arts hall are still used, and if the number is not enough, they use wooden sticks to make up. However, the training was as strict as ever, without the slightest slack. After more than a month, these people have gradually developed a military atmosphere.

The income of the glass business is very stable, but with the increase in investment and the increase in strength, it also seems to be a bit stretched. Zheng Yu felt that the dart business should be put on the agenda. This matter needs to be discussed with Liu Yun, after all, the dart game is to be armed, this matter is more sensitive, and it will be much more convenient for Liu Yun to come forward to deal with all aspects of the relationship in the future. And the reason for hesitation to experiment with new steel, I haven't seen Zheng Ying for nearly half a month, so I took a look at her this time.

The few people who called the steward arranged some things, and told Master Liu that the set of chain mail he designed would be made out of twenty sets first, and secretly stored in the warehouse, waiting for news from his side, and preparing for emergencies in the north. Then he took Liu Bao out of Zhuangzi and went straight to the city.

As soon as I came to Liufu and talked to Liu Yun about reopening the dart game, I heard three female voices chirping like birds from far and near. You don't need to look at it to know that it is Zheng Ying, Liu Manwen, and Liu Hongguo.

Entering the living room, the three girls greeted Liu Yun in turn. Liu Manwen bowed to Zheng Yu again, and said softly: "Brother Zheng Shi" can be regarded as saying hello. He sat aside and whispered something to Liu Hongguo.

Zheng Yu nodded in response. Then Zheng Ying stepped to Zheng Yu's side and said coquettishly: "Brother...... You haven't come to see me for more than half a month!! Zheng Yu smiled helplessly and said: "Isn't it impossible to get out of the body, don't you come over as soon as you are busy, besides, I see that you are happy, and your fat face is bigger" Zheng Yu said this deliberately, but Zheng Ying was startled, and quickly covered her cheeks and pressed them in, her eyes scanned her body in a panic, and her mouth muttered: "How can there be?" Where? Brother said nonsense!! Ignore you. Zheng Ying, who knew that she was being played, sat down next to Zheng Yu angrily, and stopped making trouble, thinking about letting her brother take something good to make amends for a while.

Liu Yun saw that the brother and sister were done making trouble, so he said with a smile: "Virtuous nephew, things are basically on the right track on the other side of this farm, I think you should also take care of yourself and make time to go to the clan to study." I don't think it's better to choose a day than to hit the day, just today, after lunch, let Steward Liu take you to meet the mountain chief of the Clan Academy. I'll go to the dart game for you. You see how"

Zheng Yu was stunned, this school was a bit sudden, but he still replied helplessly: "It's all up to my uncle's arrangement!" ”

Liu Yun nodded happily, thinking in his heart, "The son can be taught."

At noon, the people rested for a while. Liu Yun went out. Liu He took Zheng Yu to the Clan Academy, and since Zheng Ying wanted to follow, Liu Manwen also followed with the intention of watching the excitement.

The Liu clan is located in a partial courtyard of the Liu Mansion, and the existence of this academy is mainly to let the Liu family dye some scholarly atmosphere, and it is best to show off talents, raise people, etc., so that the Liu family can get rid of the pure merchant identity. It's a pity that the Liu family's literary luck is not prosperous, and until now, only Liu Yun's second son Liu Shijie has won a show, but Liu Manwen, who has the best talent, is a daughter. After meeting the mountain chief, Zheng Yu was arranged to listen to the class in the afternoon and get used to it. There are twenty-one cadets in the whole academy, the youngest is seven years old, and the oldest is nineteen. Zheng Yu's fifteen-year-old age was not abrupt in it, but after coming to the class, he found that he was placed in the Mengxue class. There are six people in a class, and the oldest is only 8 years old except for him, which is a bit embarrassing. Liu Manwen and the others laughed even more when they saw it, and they didn't go away, just waiting by the window outside the classroom to see him make a fool of themselves.

In the morning, the academy teaches basic courses such as the Four Books and Five Classics, and in the afternoon, teaches the other five arts of the six arts of the gentleman, etiquette, music, archery, royalty, and arithmetic. Zheng Yu caught up with an arithmetic class, in this era when chickens and rabbits are in the same cage and three-fold wells are super problems, I really don't know what can stump Zheng Yu. After listening to it for a few minutes, I fell asleep.

He simply picked up the brush in front of him, and after a little thought, he wrote on the paper: "A pool has an inlet and outlet pipe. A separate opening of the inlet pipe can fill the entire pool in a quarter of an hour, and a separate opening of the outlet pipe can empty the full pool in two quarters of an hour. If you find that the outlet pipe is not closed after two flicks of your fingers (two minutes, one flick = one minute) at a time, and then fill the pool after closing the outlet pipe in time, then how long will it take to fill the swimming pool." That's right, the famous crazy pool keeper in later generations.

After writing it, Zheng Yu read it again and confirmed that in this era, it is not too difficult if it is placed in a place like the Guozi Supervision Museum. But if you want to put it in such a small academy opened by a businessman, it depends on the level of Mr., Zheng Yu estimates that the difficulty is enough to regain his freedom.

"Sir, the student has an arithmetic problem here, and the result has been calculated, and I want to bother Mr. to see if it is accurate."

Hearing this, Mr. Arithmetic with a goatee looked up at Zheng Yu, nodded and said, "Very good, although you are a little older, but you have such an attitude towards learning, you just need to redouble your efforts and persevere, and one day you will become a useful talent." Take it up, and show it to you for the teacher" After speaking, he looked at Zheng Yu with a smile.

Zheng Yu should be. He respectfully stepped forward with the paper on which he had written, handed Mr. Goatee with both hands, and stood aside. Liu Manwen wondered in his heart, what kind of moth is Zheng Yu doing? I haven't read a book for a few days, how can I know how to do arithmetic? Don't make up a question, in order to let the gentleman praise him, then this is too naïve. I usually don't look so unreliable.

Mr. Goatee took the question, first read it roughly in disapproval, and found that he didn't understand it!! Then he leaned closer and read the question carefully, and then picked up the pen next to him and calculated on the paper, his brows furrowed more and more. Zheng Yu saw that Mr. Goatee had fallen into it, so he tiptoed out, and then calmly left the academy under the surprised eyes of several people.