As expected, Chairman He Xianya finally showed a smile on his face. (Literature Museum) looked at Qiao Feng with a much kinder look. No matter what, it would never be a bad feeling to be respected by others.

Qiao Feng stood up excitedly. He acted like a young citizen who had never seen much money. Suddenly, he saw a super rich man taking the initiative to be friends with him. He rubbed his hands, and seemed to not even know how to stand, and he didn't know where to put his hands.

The lady finally laughed completely at this moment. She laughed twice, stretched out her hand, waved her hand as if she was waving to her subordinates, and said, "Sit down, don't be so excited. I am the chairman of such a small company."

Qiao Feng laughed, sat down, and said, "So... I wonder if Ms. He Xianya comes to our Yuxuefeng Detective Office, what should I give me advice?"

He Xianya took out a stack of documents from her handbag and placed them on the table, saying casually—

"Ah, actually, it can be considered a big deal, just..."

Just as he was talking, the door of the room was suddenly knocked open. Then, a burst of rapid footsteps rushed in from outside.

Qiao Feng turned around and saw who was not the dead girl who came back from school? Seeing her rushing around like this, Qiao Feng frowned and said, "Go to do your homework quickly."

After throwing this ghost girl into the room, Qiao Feng smiled again at the lady in front of him, smiling.

He Xianya looked at Qiao Xue who was walking into the room, then looked at Xia Yu who was sitting next to her, and couldn't help but frown. After thinking for a while, she suddenly stretched out her hand and moved the documents to her. She said-

"Well, Detective Qiao Feng, right? To be honest, your detective office is so dilapidated than I imagined. I never expected it to be a residential area. I think...it doesn't seem to be a very wise decision to ask me to believe you and then entrust you with all your power."

Qiao Feng’s heart was really full of ten thousand grass and mud horses!

He knew that Xiaoxue's rude attitude just now must have made this fat sheep feel distrust!

But now, he can't rush into the room and beat that girl up, right?

So, he could only smile and said, "Ms. He, I fully understand that you seem to have some questions about the external decoration of our firm. However, we really cannot carry out large-scale decoration because we are not financially abundant. You think that your friends have introduced you to me. Do you think the appearance of a firm is more trustworthy than the inside?"

He Xianya's mouth gradually raised a gentle smile. Her fingers gently tapped the documents and smiled: "You are right. I really can't judge the ability of a firm with a light appearance. However, I also need some means to verify what you are talking about. After all, it's very simple to say that."

Qiao Feng frowned slightly, and after thinking about it, he could only bite the bullet and go: "Okay. You want to test it. I understand it very much. How do you want to test it?"

He Xianya smiled and said, "It's very simple. I'll test some of your primary school students' arithmetic questions first. If you can't even answer these primary school students' questions, then I can only laugh at you."

Qiao Feng did not answer directly. Instead, after thinking for a while, he said, "Okay. Please say it."

He Xianya: "Okay, then, my next question is really very simple. I will ask you some multiplication questions that do not involve any calculus or geometry. I ask you to answer these questions very quickly. As for the speed of multiple blocks... it depends on my feeling. There is no constant quantity. However, if I find that you cheat with something like a calculator, I will think you lose. How about it?"

At this point, Qiao Feng could only nod his head to agree. However, while he was agreeing on the surface, his hand quietly reached under the table, took his cell phone, and called out the calculator.

He Xianya: "Are you ready? Then... Question 1! What is 92x98 equal to?"

Qiao Feng quickly started pressing his fingers under the table, and then...

“9016”

Qiao Feng's fingers had not finished typing the second number "98". However, in an instant, Xia Yu next to him had already blurted out a number!

Is this number... correct?

Qiao Feng quickly entered the number, pressed the = key, and glanced secretly... The answer was not 9016, what is it?

This speed calculation obviously surprised He Xianya on the opposite side. Her eyes began to fall on Xia Yu. She looked at the elementary school girl who seemed to be only eleven or twelve years old. After thinking for a moment, she spoke again-

“75x75”

“5625”

This time the speed was faster. Xia Yu almost immediately broke this number after He Xianya finished talking about the question! And the answer...of course it is correct!

“17x13”

“221”

“41x49”

“2009”

“57x53”

“3021”

Xia Yu reported the answers in three consecutive math questions in an instant!

Qiao Feng's brows stretched out directly. He didn't even know that his wife was actually a mental arithmetic master?! Looking at He Xianya on the opposite side, she looked satisfied now. It seems that she must have passed the exam, right?

"Little sister, you are so awesome! Your mental arithmetic speed is so fast!"

Xia Yu smiled dazedly at He Xianya's praise, and at the same time, shook her head and said, "Well, my elder sister actually deliberately asked these questions. Anyone can calculate the answers to these questions in a very short time. Right?"

He was called a big sister by a primary school student, which obviously made He Xianya more satisfied than Qiao Feng's praise just now. First of all, she had basically completely agreed with this detective firm. However, to be on the safe side, she still had to ask.

"Oh? You know I did it on purpose, little sister? So, what tricks are there in these questions? Why can you figure out the answer so quickly?"

Xia Yutian laughed sincerely and said, "It's very simple~~! If the ten-digit numbers of two two-digit numbers are the same, and their single-digit numbers are added equal to ten, if these two numbers are written as ab and ac, then the first two digits of their multiplication result are ax(a+1), and the last two digits are the answers of b multiplying c."
Chapter completed!