In the conference room of the Security Department of the National Space Center, Chang Shengzhi and Jiang Fuguo were observing the mysterious wooden box that Fan Fangsi gave to Liu Peiqiang.

"What is this wooden box?" Chang Shengzhi looked at Liu Peiqiang and asked.

Liu Peiqiang replied, "I don't know either. The other party handed me this wooden box and disappeared without a trace."

Speaking of this, Liu Peiqiang continued, "I tried to open it, but it failed. The box couldn't be opened at all."

Chang Shengzhi immediately tried it. The wooden box with a square side length of less than ten centimeters could not be opened, just as Liu Peiqiang explained.

"Old Jiang, come and try it?" Chang Shengzhi greeted.

Jiang Fuguo started directly. While observing the wooden box, he bent left and right, thus trying to find the way to open the wooden box.

However, Jiang Fuguo broke up and studied it for nearly five minutes, but the mysterious wooden box did not change at all.

"Old Chang, I remember your space center has a materials research room, right?" Jiang Fuguo asked.

Chang Shengzhi asked back, "You mean, we will send it to the Materials Research Room for inspection?"

"That's right!" Jiang Fuguo responded affirmatively, "You should have an ultrasonic flaw detector and an X-ray detector here, right?"

"It makes sense!" Chang Shengzhi directly understood what Jiang Fuguo meant.

The conventional use of ultrasonic flaw detectors is to check the internal metal secret wound cracks, through which the opening and closing of the box can be found, thereby analyzing how the box should be opened.

The X-ray detector can detect what is inside the box.

In the materials research room of the Space Center, Chang Shengzhi ordered, "Deng Boguang, stop all your work first and let people with less than level five authority leave the venue."

Deng Boguang was the head of the Materials Research Office. When he heard Chang Shengzhi's orders, his face changed slightly, and then immediately followed Chang Shengzhi's orders.

A moment later, there were only two people left in the Materials Research Room except Deng Boguang. Deng Boguang took the initiative to introduce, "Minister Chang, this one is Master Song Shuo and Song, an old man in our room, with level 5 authority and 37 years of service."

"This one is Master Tang Zheng and Tang, who is also an elderly person in the room. He has a 36-year working experience and his authority is even higher." Deng Boguang introduced the situation.

Chang Shengzhi explained the situation to Song Shuo and Tang Zheng, and then explained, "Master Song, Master Tang, we need to check this box now. Can you do it?"

Song Shuo responded affirmatively, "It's just a small thing!"

Tang Zheng agreed, "We can start soon."

Chang Shengzhi greeted, "Xiao Liu, give the wooden box to the two masters to see the situation."

Liu Peiqiang handed over the wooden box, and Song Shuo took it first. He immediately groped, but like Chang Shengzhi and Jiang Fuguo, he did not find any problem at all.

Tang Zheng reminded, "Old Song, I'm ready, let's check it with X-ray first."

"Yes." Song Shuo put the wooden box into the detection area of ​​the X-ray detector, and Tang Zheng immediately began to operate the X-ray detector.

However, less than a minute later, Song Shuo said in surprise, "Old Tang, is our X-ray detector broken?"

Tang Zheng was observing the vehicle inspection area of ​​the X-ray detector. He responded, "Impossible? What happened?"

"I didn't see the image of the feedback from the X-ray detector." Song Shuo explained.

Tang Zheng walked over and checked. As Song Shuo said, the X-ray detector did not provide any images.

"Is it really broken?" Tang Zheng said to himself. He terminated the X-ray detector, then stuffed a paper clip into a book, and then put the book into the detection area of ​​the X-ray detector.

Less than a minute later, the X-ray detector detected the paper clip in the book, and the X-ray image was completely displayed, and the paper clip was clearly displayed.

Song Shuo and Tang Zheng looked at each other, and Song Shuo walked first, "Let's do it again!"

Tang Zheng nodded affirmatively. He watched Song Shuo take out the book with the paper clip. He solemnly put the mysterious wooden box in and reminded, "Old Song, check the location and see if it is in the detection area."

Song Shuo checked it three times before he responded with certainty, "It is 100% in the testing area."

Tang Zheng nodded and then turned on the X-ray detector again.

However, the situation this time is exactly the same as before. The X-ray detector seems to have a malfunction and does not provide any image information at all.

"This..." Tang Zheng looked at Song Shuo in confusion, and happened to meet Song Shuo's confusing gaze.

"Old Tang, let's try an ultrasonic flaw detector?" Song Shuo suggested.

"Okay!" Tang Zheng responded.

The two began to use ultrasonic flaw detectors to detect the mysterious wooden box again. However, like the X-ray detector, the ultrasonic flaw detector could not detect the existence of the mysterious wooden box.

Tang Zheng walked towards Song Shuo, and he lowered his voice and said, "There is something wrong with this wooden box."

Song Shuo also lowered his voice, "There is indeed a problem."

"I'll report!" Tang Zheng took a deep breath. He looked at Chang Shengzhi and Jiang Fuguo who were waiting outside the inspection room, as well as Deng Boguang, and agents from the Beijing Security Investigation Bureau that blocked the corridor. He had realized that this wooden box might involve a big secret.

"Director Deng, our inspection has been completed. Because the situation is special, can you come in so that we can explain it." Tang Zheng explained.

Deng Boguang was just about to scold him, but Chang Shengzhi agreed instead of Deng Boguang.

Chang Shengzhi walked into the testing room first, and he asked directly, "Master Tang, what's the situation? What's in that wooden box? Have you found a way to open it?"

Tang Zheng's negative response, "Sorry, Minister Chang, we have encountered some trouble."

"Oh?" Chang Shengzhi looked at Tang Zheng in confusion, "Tell me in detail."

Tang Zheng hesitated for a moment before responding, "There is something wrong with this wooden box. On the surface, it is just a beautifully carved wooden box. Maybe there is some special design, but it is an ordinary wooden box after all, right?"

Before Chang Shengzhi and Jiang Fuguo asked, Tang Zheng continued, "However, it has a big problem! It cannot detect its existence either by X-ray detectors or ultrasonic flaw detectors."

"Old Song, you can use an ultrasonic flaw detector to demonstrate it immediately." Tang Zheng greeted.

Song Shuo immediately used an ultrasonic flaw detector to detect the mysterious wooden box.

Tang Zheng explained, "You should pay attention to the ultrasonic flaw detector working normally, but it did not detect the existence of that wooden box, as if the wooden box was a ball of air, and the ultrasonic flaw detector passed through it directly. The X-ray detector was in the same situation as the X-ray detector, and it could not be discovered at all."
Chapter completed!