Song Ziling first copied three ancient poems and started arithmetic homework. He was always so bad about the calculation. As soon as he read the question, his mind became muddy.

"One, two, three, four..." Song Ziling put down his brush and counted his finger joints. He should have used abacus, but today he put the abacus in the academy.

"Oh... not enough!" After counting the knuckles, he realized that the knuckles were not enough at all.

"What are you counting?" Chen Wan, who was sitting and chatting with Ling'er, couldn't help but ask.

Song Ziling said a little annoyed: "I'm doing arithmetic problems! I forgot to bring the abacus back today, and there are not enough finger joints."

Counting the finger joints? Chen Wan looked at Song Ziling with disgust. It was a kindergarten thing to count the finger joints and do arithmetic problems! Song Ziling is nine years old, and even needs to count his fingers when doing arithmetic problems.

Chen Wan said: "Please give me the question."

Song Ziling said: "There are two chickens in one family, and they lay two eggs a day. How many eggs can be laid in a month."

"..." Chen Wan looked at Song Ziling speechlessly, feeling that such a question was simply an insult to her IQ.

"Do you still need to count the fingers? Even if you add your feet directly, you can't count them enough. Ling'er, do you know how many eggs this chicken can lay in thirty days?" Chen Wan looked at Ling'er and asked. He was always smart and could definitely know the answer.

Chu Ling thought for a while and said, "Two eggs are born a day, and twenty eggs are born in ten days..."

"Wait..." Chen Wan interrupted him, and she twitched her eyes and said, "Your algorithm is too complicated and too slow. Two eggs a day, how many eggs can be laid in thirty days. Isn't it enough to use two times thirty? Two or three times six, isn't it sixty in thirty days?" How simple!

"Multiple by?" Song Ziling and Chu Ling both looked at Chen Wan with a blank expression.

Looking at the confused faces of the two children, Chen Wan was stunned for a moment. Wait, there seems to be no multiplication table of nine or nine in this era, and there is no addition or subtraction table. Addition and subtraction are just abacus.

However, if you can remember the addition and subtraction tables, and the multiplication and division tables, it will be much easier to calculate.

Chen Wan said to the two of them: "This is a new algorithm. I will change to the table tomorrow. If you memorize it, you will be able to stand out in arithmetic and make other students far behind." She said this, which was definitely not bragging.

"Oh..." The two of them said oh, looking at Chen Wan without saying anything. Although they had never heard of this new algorithm, this algorithm was really fast!

Seeing that Song Ziling was still looking at her, Chen Wan said, "What are you still watching me? Why don't you finish your homework and have a good dinner."

Song Ziling hurriedly turned around and filled in the answer to sixty eggs under the arithmetic question.

Song Ziling had just finished all his homework, and Qiu Ju's supper was also ready.

As usual, the rice bowl is five dishes and one soup, the soup is winter melon and pork ribs soup, the dishes are pickled fish, fried chicken, braised tofu, sweet and sour cabbage, and fried beef with ginger.

In order to have a meal earlier, Song Ziling helped set up the dishes and chopsticks.

The first time Song Ziling ate sauerkraut fish, he was fascinated by the taste after taking the first bite. The fish meat is tender, sour, spicy and fragrant, it is really delicious, even better than the sour radish old duck soup.

"Knock and knock" Just as the meal was halfway through, the knock on the door sounded.

"I'll open the door." Qiuju stood up, walked to the entrance of the courtyard gate, and opened the door.

"Brother Qiao?" Qiu Ju opened the door and saw Qiao Mu wearing a brown outfit and her hair was tied with a copper crown.

As soon as he saw Qiuju opening the door, Qiaomu grinned and showed a mouthful of snow-white big white teeth.

Seeing him laughing, Qiuju's ears became red after no reason.

"Why are you here?" Because Qiao Mu's smile was too dazzling, Qiu Ju lowered her head slightly, and her heartbeat couldn't help but speed up a little.

Qiaomu replied, "I heard from my brothers that you are looking for me today."

As soon as he returned to the yard, he heard that Qiuju had been looking for him not long ago, so he put down his sword and didn't even bother to eat, so he ran over.

Chen Wan in the yard heard Qiaomu's voice and sang: "It's Qiaomu! Come in!"

Qiuju turned sideways and lets Qiaomu enter the yard.

As soon as he entered the yard, Qiao Mu smelled the scent of sauerkraut fish, and the greedy worm in his stomach ran out. After eating this sauerkraut fish in his wife's yard last time, he kept thinking about it!

"Madam," Qiaomu stopped one meter away from Chen Wan and others, and bowed to Chen Wan with fists.

Chen Wan looked at Qiaomu and said, "Have you eaten?"

Qiao Mu replied with a smile, "Not yet!" If someone else had changed, he would have said he had eaten it. But at the wife's place, he didn't want to be polite.

"Then sit down and eat some!" Chen Wan said and then Qiu Ju, who was rushing over, said, "Give Qiao Mu the pair of bowls and chopsticks."

Song Ziling was eating fish, frowned and looked at Qiaomu, thinking, "Why did you let everyone eat with us? Sister Qiuju is fine. When Qiaomu comes, he has to add some bowls and chopsticks to eat with us. He really doesn't have any rules."

Both my sister and Madam Lin said that the servants and soldiers in the mansion were serving them, and there was no need to be too kind to them or polite to them.

Qiaomu did not postpone it, and walked to the empty stone bench next to Ling'er and sat down.

"Do you have something to do tomorrow?" Chen Wan asked looking at Qiaomu.

Qiao Mu replied with a smile: "I will take a break tomorrow, and there is nothing to do. If Mrs. asks me to do something, just give me the order."

He can take four days off a month, and it will be his turn to take a break tomorrow.

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Chapter completed!