Because it is not yet Yuanzheng, the family banquet at night is just to wee Li Yuan, Li Yin and others back to Chang''an, so it is not too grand. Li Yin didn''t eat at noon, and he was hungry at this time, so he just bowed his head While eating, Si, Li Zhi, the four little guys who were studying in Yizhou, received extra attention at the family banquet.


    When Xizi was tired by Li Shimin''s side, Li Shimin asked, "Sizi, tell Father, what did you learn in Yizhou?"


    "I know math, Sizi can add, subtract, multiply and divide now, brother six even praised me for being smart!" Sizi muttered with a piece of meat stuffed in his mouth.


    "Mathematics?" Li Shimin had only heard of this term, but he didn''t know what it was used for.


    Li Yun learned things the fastest in the four-person middle school. Seeing Li Shimin frowning, he stood up and said: "Mathematics is what we call arithmetic, but the content contained in it is much more refined than arithmetic, even if it is the production of this ssic car. It’s all about math.”


    Li Shimin was even more amazed, and said, "Is this mathematics really so amazing?"


    Others also showed puzzled expressions, Li Chengqian said: "Since this mathematics is so magical, why don''t Qng cover it up in front of everyone, and let us see what Yizhou is teaching now?" Hearing Li Chengqian''s words, Li Yin He raised his eyes and looked at him, a little confused, not understanding what he meant, he said: "Qng, since both the father and the crown prince want to know, you might as well demonstrate it to them."


    Li Yun heard the words and said to Li Shimin: "The minister is showing his shame there. May I ask the father, from the beginning to one hundred, what is the total number of each number?"


    "One to one hundred?" Li Shimin was a little embarrassed. Said: "This father can be calcted, but I am afraid it will take a while."


    Li Yan said from the side: "Father, Qng can calcte this in a few breaths of time."


    "How many breaths? How is this possible? This is added one by one. Although the father is not very proficient in arithmetic, it can be calcted, but the time for a few breaths must have passed." Li Shimin doubted.


    Li Yun said: "Father, you can easily solve this problem with some algorithms in mathematics. Just add the first two numbers and multiply by fifty to get the sum of five thousand and fifty."


    "Five Thousand Zero Fifty?" Not only did Li Yun''s words fail to make the people sitting there understand, but they became more and more confused. Li Shimin suddenly realized that this question should not be raised. Everything in Yizhou is extremely weird, "Father will ask someone to calcte itter, let''s eat." Li Chengqian frowned, at this time it was really like ying the piano to a cow, but it was Li Yun who yed the piano.


    Li Yun''s simple words half confused the people in the hall. Li Yun was also very bored, and found that he suddenly had nomonnguage with them, so he sat down again, sighed softly, and made up his mind to follow Li Yun in the future.


    Xizi was still young and didn’t understand. Li Zhi and Li Zhen also shook their heads slightly. The knowledge and education they followed gradually raised their cognition to a higher level before they came back. Suddenly, I found that there was an invisible generation gap between me and the previous people, because their cognition has broken away from the backwardness of the past.


    After a hasty meal in Baifu Hall, Li Yin felt mixed feelings. This time he came to Chang''an, his heart was still a little drummed, but today''s situation made him even more worried. Before, he could see that Li Chengqian and Li Tai were dissatisfied with him, but today he couldn''t see it at all. It''s not a good thing, it shows that the two are hiding deeper. This is the source of his anxiety.


    Therefore, before Li Yin came to Chang''an, he asked the shadow guard to secretly watch all the troubles in Chang''an. Report to him anytime, as long as it''s not a massive troop move. There is still nothing that can threaten him, and he also wants to return to Yizhou as soon as possible after Yuanzheng.


    An hourter, the family banquet ended in harmony. Li Shimin and Empress Changsun took Si Zi, Li Zhi and others to leave, while Concubine Yang asked Li Yin to follow him back to Ziyun Pavilion. Seeing Concubine Yang''s face, she It seems that there is something to tell Li Yin.


    Following Concubine Yang to Ziyun Pavilion, Concubine Yang retreated from the servants on the left and right, first sized up Li Min carefully, then suddenly sighed, "Min''er, since you fell into the well five years ago, you have be the same as before. It''spletely different, and in the past five years, everything you have done is shocking, and this time your support for your father is indeed a little too much."


    "My son has already sensed it. What the concubine mother wants to say is that my son has already made great achievements?" Li Yin said softly.


    "That''s right, you and your royal father are father and son, but they are also monarchs and ministers. You can say that the Northern Expedition was achieved by you alone. Although your royal father praised you, there may not be any fear of you in your heart!" Concubine Yang Then he said, "These days, every time he mentions you in front of me, his expression is different from before. I feel that he is a little scared."


    "Scared, mother concubine, this is not possible!" Li Yin really didn''t feel anything.


    "Have you forgotten how your father seized the throne?"


    Concubine Yang''s words made Li Yin realize something, "Concubine mother, emperor father is emperor father, and I am me."


    "I understand, otherwise you wouldn''t be going to save your father. Although your father trusts you very much now, there is a knot in your heart. To untie the bell, you have to tie the bell. This knot still needs you to untie it. Otherwise, there will inevitably be some estrangement between you father and son." Concubine Yang stretched out her hand to straighten Li Yin''s messy hair.


    Li Yin nodded, Concubine Yang meant that Li Shimin would always be worried that Li Yin would do to him what he did to Li Yuan back then, but this question gave Li Yin a headache, how should he solve this knot?


    Seemingly seeing Li Yin''s thoughts, Concubine Yang said: "Are you thinking about how to make your father feel at ease?"


    "Yes, concubine mother, this is really troublesome." Li Yin said.


    With a slight smile, Concubine Yang said: "You are really a fan of the authorities. Your father can let the world know that you have made great achievements this time in the newspaper. Couldn''t you publish an article about benevolence and filial piety in the newspaper to let everyone know that you have made great achievements?" Your father understands your thoughts."


    Li Yin suddenly realized, "Mother and concubine, I understand." In this way, Li Yin is tantamount to showing that he attaches great importance to the word benevolence and filial piety in front of the world, but how could he follow the example of those who value benevolence and filial piety? What about Li Shimin?


    After talking about this matter, Concubine Yang immediately changed the subject and said, "How is Yingying doing now? She''s about to give birth in a few months." When she spoke, Concubine Yang was full of anticipation.


    Li Yin smiled wryly. It seems that no matter at that time, parents were most concerned about the issue of children getting married and having children. Li Yin said: "Mother and concubine, don''t worry, I will definitely let you hold a grandson next year."


    "It''s almost the same. It''s been five years, and my mother is dying of anxiety. I thought Yingying couldn''t get pregnant. This is the most painful thing for a woman." When she was in Yizhou, Concubine Yang was afraid that Cui Yingying would feel ufortable. So it''s okay to just ask, and now there are only two of mother and son, she just said it bluntly.


    Li Yan was speechless and choked for a moment. It seemed that he had really hurt Cui Yingying, and it was no wonder that Cui Yingying lost her temper that day, "Now mother and concubine, you can rest assured!"


    Concubine Yang nodded with a smile, and continued: "However, you still have fewer concubines. A prince still only has one main room. Although Su Mo''er is good, she is only a concubine room. You have to think about the two rooms too, recently many aristocrats with five surnames and seven Wangs have brought their daughters to visit me, and I understand their thoughts, how about I just get two for you?"


    Li Yin just wanted to sit down and immediately jumped up. For him, it’s better if there are more wives. When the pce starts to y tricks, he will have to bear it. , now that Erchen is getting older, let Erchen decide this matter, if Erchen takes a fancy to that littledy, can Erchen tell his mother and concubine again?"


    Seeing Li Yin like this, Concubine Yang nodded Li Yin''s head with her fingers, and said angrily: "There are so many princes, and it''s so difficult for you to marry a woman all day long. Look at your third brother. There are seven or eight wives and concubines? How about you, you can count on five fingers." After finishing speaking, he shook his head vigorously.