What he is worried about now is that if his father finds out that he came last in the monthly exam this time, he will be hung up and beaten.

Fortunately, during the day, his father was still at work and not at home, so he could still enjoy himself for a long time.

However, when Cheng Yaojin came back in the evening, he still called him to the study.

They still asked him what he had learned in school. In fact, Cheng Yaojin didn't expect this rich and humble son to learn anything. He was simply curious about what the academy taught.

But when Cheng Chumo explained everything taught in class, Cheng Yaojin's expression immediately changed.

"Have you learned all this?" Cheng Yaojin looked at his son suspiciously.

Cheng Chu hesitated silently: "I learned a few things."

"Oh, what have you learned, and how much can you count?" Cheng Yaojin asked.

"I can still understand addition, subtraction, multiplication and division within a hundred." Cheng Chumo answered cautiously.

"Oh? Please show me the calculation. Each person in an army of five thousand people will eat two kilograms of grain every day. How much grain will they eat in thirty days?" Cheng Yaojin asked this question to deliberately embarrass his son.

, he knew this son quite well. When he was a captain under him, he could not even count the food and fodder for fifty people, let alone five thousand people.

However, what Cheng Yaojin didn't expect was that in his daze, Cheng Chumo actually settled the matter.

"Three hundred thousand catties of grain? How did you calculate that?"

What surprised Cheng Yaojin even more was that this brat was actually right.

"Isn't it very simple? Each person has two kilograms per day. For 5,000 people, just multiply 2 by 5,000 to get ten thousand kilograms. Multiply that by thirty kilograms, and you get three hundred thousand kilograms." Cheng Chumo responded.

He scoffed. Although his math scores were not very good, such pediatric questions would not be difficult for him.

Cheng Yaojin was shocked. He stared at Cheng Chumo for a long time and thought to himself: Is this still my son?

"You guys learned this in one month at the academy?"

Cheng Chumo scratched his head in embarrassment: "Actually, there are some other equations of one variable, but I still don't understand. That kid Xue Er learns very quickly. Yun Ye even praised him for his talent in arithmetic."

"Have you all learned it?" Cheng Yaojin was even more surprised.

"Ah, they all study better than me, except Yuchi Baolin. If it hadn't been for him, I would have been at the bottom of the monthly exam..."

As soon as the words came out of his mouth, Cheng Chumo knew that something was wrong. Sure enough, Cheng Yaojin was so angry that his face turned red and his neck thickened.

"You brat, I told you not to study hard, but you still have the nerve to compete with that idiot Yuchi Baolin! Just watch!"

Suddenly, there was a lot of excitement in the Duke's Mansion. Cheng Yaojin was chasing after him with a huge wooden stick. Cheng Chu Mo Sa Yazi was running in front. After a while, the father and son ran around the backyard of the Duke's Mansion. In the end, it was Mrs. Cheng.
Chapter completed!