Two days passed.

Ten thousand four-digit figures were excluded.

The lucky number is not in the four digits.

I had no choice but to look for it in 100,000 five-digit miles.

On the 26th, there were six days left until the first of September.

The four-digit exclusion rate was only three per minute, half the speed expected by Xiang Tianliang.

The elimination of five digits is slower and more difficult, Xiang Tianliang himself only takes three points five per minute, and the speed of three women is only two per minute.

At this rate, it would take at least 600 hours to exclude all 100,000 five-figure figures.

Six hundred hours, a full twenty-five days, not to mention going out to stop the tragedy of the teaching building of the No. 1 Middle School in the city, even if you stay in this steel fortress, you will already be starved to death.

There is plenty of water, but water is not enough for food, and there is a lot of wine, but wine does not make you hungry, unless you are drunk and forget to be hungry.

The pantry was full of biscuits and other things, and I couldn't eat enough to eat, not to mention that there were not many of them, and they had to be distributed according to the ration of seven days.

On the contrary, the three boxes of fast noodles placed under the table of the Eight Immortals, Xiang Tianliang's usual most hated food, have now become delicacies from the mountains and seas.

However, the "person in charge" Li Yajuan said that this is a life-saving treasure, which will be distributed from the 29th, and there will only be two packs per person per day.

Li Yajuan also said that Xiang Tianliang is a man and does a lot of work, so he can add one bag a day when the time comes.

But Xiang Tianliang was so hungry that he couldn't help it, and in the early morning of the 26th, he took advantage of the opportunity of the night shift and began to steal food.

Instant noodles and tap water, soaked in the water, and ate the fragrant yo.

Xiang Tianliang was still unsatisfied, and ate three packs in a row, consuming one-twenty-fourth of the total amount of instant noodles at once.

Looking at the three women, Xiang Tianliang said seriously: "Don't stare at it, I just ate the ration of the twenty-ninth first." ”

"Yo, I also ate three packs, don't you usually eat fast noodles?" Li Yajuan said with a smile.

"Alas...... Fuck, it turns out that the instant noodles are delicious too. Xiang Tianliang touched his stomach and sighed.

Yang Biqiao smiled and said, "Eighth Master, when you go out, I'll make you a big pot of your favorite braised pork." ”

"Biqiao, which pot are you not open and mention." Chen Meilan Road.

As soon as he heard the braised pork, Xiang Tianliang salivated, "Fuck, whoever gives me a bowl of braised pork now, I will make him a cow and a horse for the rest of his life." ”

Pointing to the kitchen door, Li Yajuan smiled: "There is a refrigerator in there, but you have to open the door first." ”

"Forget it, let's concentrate on opening the front door, this is the door of life."

Yang Biqiao took over Xiang Tianliang's "work".

Chen Meilan asked: "Eighth Master, if we can't go out, or if we can't go out on September 1, what will happen to the teaching building of City No. 1 Middle School?" ”

"Are you worried?"

"Hmm."

Li Yajuan said: "The children of Sister Meilan and Sister Biqiao are both studying in the No. 1 Middle School in the city, can you not worry about being a mother?" ”

Xiang Tianliang nodded.

"Let me ask you a question, do you know architecture?"

Chen Meilan and Li Yajuan both shook their heads, not everyone in the Construction Bureau understands the principles of architecture.

"I asked Ma Liujin, director of the construction industry, that no matter what building, there are serious safety hazards, or even if it is a dangerous house, it cannot collapse immediately, and the cause of the collapse is often caused by external forces, such as ground movement, wind blowing, rain, sun, etc., the teaching building of the first middle school in the city is a new building, the worst quality, and it will not collapse instantly, its collapse must be a slow and cumulative process."

Li Yajuan said: "You said it lightly, do you dare to stay in a house that doesn't know when it will collapse?" ”

"Listen to me, we spent one night to calculate the extent to which the third construction company in the city cut corners on the teaching building project of the city's No. 1 Middle School, and we also came to a preliminary conclusion that two teaching buildings, an office building, an experimental building and a tower were subcontracted by five engineering teams respectively, and the degree of their cutting corners was not the same, two teaching buildings can be characterized as quality problems, an office building and an experimental building have serious quality problems, but these four buildings do not have serious safety hazards, So, they won't collapse for the time being. ”

Chen Meilan said: "Yes, the real problem is the tower that connects the four floors. ”

"That's a staircase for thousands of people to go up and down." Li Yajuan added.

Xiang Tianliang snorted, "That tower cut corners the most, especially the column in the middle, which has to bear the weight of the entire tower, including the four spiral staircases, and under certain circumstances, it is likely to collapse suddenly. ”

"What specific situation?" Chen Meilan asked worriedly.

"Resonance."

"Resonance? Isn't it just a physical phenomenon? Li Yajuan said.

Xiang Tianliang said:

"Yes, resonance refers to two objects with the same vibration frequency, when one vibrates, causing the other object to vibrate, of course, this also refers to a physical system, at a specific frequency, with the maximum amplitude of the vibration, this specific frequency is called resonance frequency, in nature, there are many places where there is a phenomenon of resonance, such as the acoustic resonance of musical instruments, the orbital resonance between some Jupiter-like moons of the solar system, the resonance of the basement membrane in the animal ear, and the resonance of the circuit, etc...... Have you ever heard such a story, in the middle of the eighteenth century, a group of soldiers under the command of the commander, with majestic and uniform steps, through a bridge in the French city of Angers, when about to walk to the middle of the bridge, the bridge suddenly trembled strongly and finally broke and collapsed, causing many officers and soldiers and citizens to fall into the water and die, and later after investigation, the culprit of this tragedy was resonance, because when the soldiers of the brigade walked in unison, a frequency was generated exactly the same as the natural frequency of the bridge, The vibration of the bridge is strengthened, and when its amplitude reaches its maximum until it exceeds the pressure resistance of the bridge, the bridge breaks. ”

Li Yajuan sighed: "I have heard this story, the resonance phenomenon is too powerful. ”

"There is also a story, it is the modern American inventor Tersla, he once said that with a resonator, can split the earth in two, one day, he came to Wall Street, climbed an unfinished steel structure building, took out a small object from his coat pocket, clamped it to one of the steel beams, and then pressed a small button on it, after a few minutes, you can feel this steel beam trembling, slowly, the intensity of the trembling began to increase, extending to the whole building, zuihou, The entire steel structure began to creak and sway, and the terrified steel frame workers thought that there was something wrong with the building, or even an earthquake, so they fled from the elevated frame to the ground in a hurry...... If he drove the small object for about ten minutes, the building would have crashed to the ground, and he had said that with the same small resonator, in less than an hour, the bridge connecting Manhattan Island and Long Island in New York could be destroyed, causing it to fall into the deep darkness...... It turns out that the power of the resonator is mainly that it can emit waves of various frequencies, and these waves of different frequencies act on different objects, which can correspondingly produce a kind of resonance wave, and when this resonance wave reaches a certain level, the object can be destroyed......"

Chen Meilan asked: "Regarding resonance, does it have anything to do with the central tower of the teaching building of the No. 1 Middle School in the city?" ”

Xiang Tianliang continued:

"Of course, it is related, the tower is a whole, it has a natural frequency, students go up and down the stairs, it will also produce frequency, it is dynamic, so it is called the driving frequency, when the driving frequency generated by the students, when the natural frequency of the tower is the same, it will reach resonance, that is, the resonance phenomenon occurs, and the effect of the resonance of the two frequencies can increase the amplitude, the kinetic energy of the tower itself will increase, it will produce its own vibration, and when its own vibration breaks through and exceeds the deformation that the design can withstand, the tower will collapse...... If you think about it, the consequence of cutting corners is actually lowering the standard of the design, that is, its actual natural frequency is more likely to resonate with the driving frequency generated by the students up and down, and thousands of students, if they were to rush down the four stairs together, the tragedy in the story above would probably happen......"

Chen Meilan stayed for a while, then held Xiang Tianliang's hand and said, "Eighth Master, we must go out and save those students." ”

"Don't worry, I promise, we'll find our lucky number by noon on September 1st."

"Really?"

"You ask Sister Li, she knows." Xiang Tianliang didn't want to tell the second woman the secret of his ears.

Chen Meilan looked at Li Yajuan, Li Yajuan nodded and said, "Sister Meilan, don't worry, the eighth master said that if he can, he will definitely be able to." ”

Xiang Tianliang took a piece of paper.

"We're going to change the way we look for lucky numbers, Sister Yang continues to move from small numbers to large numbers, when it's your turn to Sister Chen, you start looking up from 'four zero zero zero', and when it's Sister Li's turn, you start looking up from 'seven zero zero zero zero', and at this time tomorrow, we turn it back and look from top to bottom."

After speaking, Xiang Tianliang fell asleep.

Taking Chen Meilan to drink water, Li Yajuan leaned over and asked in a low voice, "Eighth Master, have your ears reacted?" ”

"Yes, it's the left ear."

"Left ear? Isn't that the Annunciation? ”

Xiang Tianliang smiled: "Exactly, it suddenly trembled slightly three times more than an hour ago. ”

"What does that mean?"

"It shows that we are on the right path, that we are on our way to victory, and that lucky number is getting closer and closer."

Li Yajuan said: "You mean, the closer you get to that lucky number, the more intense your left ear's reaction will be?" ”

"Of course, can I not understand my ears?"

"Say it quickly."

"Shh......h Tap and don't let the two of them hear. ”

Unexpectedly, Chen Meilan came over and said, "Stinky Eighth Master, do you think I don't know?" ”

Yang Biqiao also stopped "working" and walked over, "Stinky eighth master, you can't favor one over the other, just say it to Yajuan." ”

Li Yajuan looked at Xiang Tianliang and smiled, "Eighth master, if you say it, it won't stink." ”