"Someone's in there?"

He Ying turned her head to look at Chen Du with a surprised face.

Unlike my own home, the door crack here is completely blocked, airtight, and it looks like it is still made of wood.

Because the size of the wooden block could not fit exactly under the crack of the door, there were other things such as paper stuffed into the remaining gaps.

"Really."

Chen Du was also a little surprised, it stands to reason that this is the fourth floor, there is almost no food and water, even if there may be some snacks and drinks left in the office, but now that two months have passed, it should have gone bad a long time ago.

"Maybe there's something like a snack in a small package?" He Ying listened to Chen Duan's analysis and asked.

"Maybe, but sooner or later they will still finish eating, the location on the fourth floor is destined to make it impossible for them to go out to forage for food, in this case, normal people will want to go to the ground to find a stronghold first."

"You can't think of everyone very sanely, and if they can't get downstairs and they happen to have food, it's reasonable to hide here for the time being." He Ying said with a smile.

"Yes."

Chen Du realized that he had made a mistake.

"Shall we go in then?" He Ying turned his head and asked.

"It's all here, you can't just go back empty-handed." Chen Dudao.

"But there must be someone in there." He Ying said worriedly.

"Let's see if we can secretly take some back, such a big room, as long as there are not too many people, I guess they may not be able to find out, even if they do, you can try to discuss, we don't have to think of everyone as aggressive, maybe people want to go back with us......"

As he spoke, Chen Duan walked to the far left side of the door and pushed it with his hand, but found that it did not move.

It seems that the other party is stuffed tightly.

After adding a few more forces, Chen Duan noticed that something was wrong.

"It feels like something is in place."

"Fixed?"

"Well, it's not nails, it's glue or something."

Chen Duan stuck one hand on the wooden block that served as a block.

Soon.

A swirling hole revealed.

To be on the safe side, he immediately flashed to the side, for fear that something would come out of it.

Very quiet inside.

"I knew that I should have let Sun Yuan come with me." He Ying whispered to Chen Du.

Chen Du ignored it, and after waiting for a while, he was about to go up to take a look, but was stopped by He Ying.

"I'll go."

"Huh?"

"I'm fast, if a zombie really comes out, I'm sure I'll be able to hide faster than you."

Chen Du was speechless, but agreed.

He Ying walked lightly to the entrance of the cave that was only crawled by one person, and sneakily poked his head in.

The blocks used for the plugging are not thick, perhaps because the other party is unable to move large objects.

Soon, half of He Ying's body had already reached in, and Chen Du was ready to pull her back at any time.

After a moment, He Ying retracted her body.

"It's quiet, it doesn't look like someone."

"Then let's go in."

Chen Du followed He Ying and climbed in.

The office was much larger than the storage room they were in, about a quarter the size of a classroom, but it wasn't open enough because of the mess.

There are all kinds of materials on the ground, and it is almost like being in a huge garbage dump.

Chen Du and He Ying have been here before.

Teacher Wan of the labor technology class is a little old man without a frame, knowledgeable, humorous, able to mingle with the students, every time he class, everyone is the most relaxed.

Because of the subject, even after class, many students are willing to go to him to ask questions or make small talk, covering topics ranging from homemade popsicles to satellite launches.

"I don't know what happened to Teacher Wan." He Ying was quite emotional, and said, "He also helped me repair shoes before. ”

"Shoe repair?" Chen Du was stunned, he didn't have much leisure time after class, so he didn't have any personal relationship with Teacher Wan.

It's just that there is still a need to repair shoes this year?

"Hmm." He Ying nodded, then smiled and said, "I remember once I lost the 100-meter race, and after I came back, Mr. Wan found me and said that it was because of the wrong angle of the rubber surface of my shoes, which caused me to not be able to fully exert my speed." ”

"And then he'll cut the upper for you?"

"Hmm."

"Does it work?" Chen Du was curious.

"I don't know." When He Ying said this, she sneered, "He cut my shoes." ”

"Huh?"

"He said his idea had failed and bought me a new pair of shoes the next day."

Chen Du could imagine that thin little old man looking embarrassed in front of the students, and the corners of his mouth were slightly curled.

"Speaking of which, we haven't seen any teachers at school until now." He Ying suddenly thought of this question, and she hadn't even seen the master and aunt in the cafeteria. ”

Chen Dui said, "Because there is a middle school in the cafeteria, it is estimated that the staff are either dead or have fled, and the teachers are ......."

"How?"

"I remember Tang Jing told me that the state stipulates that the ratio of teachers and staff in high schools is 1:125, and there are 2,000 students in our Ziwei High School, and the teaching staff is about 160 people, but the problem is that except for the staff in the cafeteria, all the teachers' offices are above the second floor, and the survival rate in these places is already low.

"Is it possible that the boss of Qingbei is the headmaster?" He Ying suddenly became interested.

"And then finally find out that he's the evil behind the scenes?"

"yes, that's what you think?" He Ying said excitedly.

"No, classmate, you've watched too many cartoons." Chen Du said helplessly.

"However, this possibility cannot be ruled out." He Ying was very dissatisfied with this man who had no imagination.

"Oh, okay." Chen was clearly reluctant to discuss such a boring topic.

The two of them whispered while shuttling through the gaps of various materials and parts, which, to be honest, gave people a sense of security.

Of course, this also brings with it the problem that it is difficult to find what they are looking for.

Before coming, Tang Jing told them in detail about the lubricating oil they needed.

There are several kinds of lubricating oils, and they are all used differently, such as D5 oil for power systems, 9010 oil for gears, and 8300 lubricating oil for clockwork systems.

Fortunately, Tang Jing told him the appearance and color of the oil bottle at the same time, but he didn't know where to put it, and they needed to find it.

Near the window, there is a set of desks, but there are also various messy model materials on it.

Against the wall, there was a glass cabinet, needless to say, which was also stuffed with things.

Looking at it like that, Chen Du was worried about whether the things on it would fall off.

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