Chapter 38: Let me teach you

"You... don't be anxious. If you were trapped there, we would definitely think of a way. But, it's not you right now."

Zheng Xin said weakly, not daring to look Zhang Su in the eye after being criticized.

Zhong Xiaoshan scratched her head and didn't speak, also very embarrassed.

"You must use your brains at all times, otherwise how can you think of a way at a critical moment?"

Zhang Su educated the two seriously, then added: "Originally, I didn't intend to help that guy, but to teach you, I'll make an exception this once. Learn well!"

He had to find a reasonable explanation for helping out, because this didn't conform to the survival philosophy he taught them.

"Oh, oh, learn well."

The two said in unison, not feeling anything wrong at all.

"Since we already know that zombies have a very strong sense of sound, we can fully utilize this point to lure them. The guys who went out of the city before, the group of five who escaped the residential area, and the neighbor downstairs who used the elevator to transport zombies, didn't they all use this principle?"

As he spoke, Zhang Su walked into Zheng Xin's room.

"But we don't have a drone, nor a big loudspeaker. Even if the mobile phone has a playback function, don't tell me we're going to hold the phone and play it outside the window? Not to mention whether the sound is loud enough, are we going to lure all the zombies to our building?"

Zheng Xin looked at Zhang Su, who was squatting on the ground rummaging through express delivery boxes, puzzled.

Zhang Su didn't stop, gathered some foam used for packing together, then took a mobile phone out of his pocket and said: "The volume of an ordinary mobile phone is limited, but this kind of old-fashioned phone is different..."

After finishing, Zhang Su turned on the old-fashioned phone he had turned off earlier.

Ding, ding, lang, lang...

A loud music sound rang out in the room, startling everyone without warning. Even Zhang Su, who was prepared, had his mouth twitch.

"Heard it? This sound, even if placed in an open garden, is quite explosive. It can attract zombies within a radius of at least a hundred meters!"

Zhang Su was actually a bit reluctant to part with the old-fashioned phone in his hand; there were only two in total, but they were very useful. However, as soon as he thought of the reward for the A-level challenge, that bit of reluctance vanished.

"Brother Su, you intend to use this foam to bundle the phone, then throw it downstairs, and you can attract the zombies' attention, so that person can take the opportunity to escape, right?"

Zhong Xiaoshan had roughly understood Zhang Su's plan.

Zhang Su didn't answer, but looked at Zheng Xin and asked with a smile: "What do you think of the method Xiaoshan said?"

Zheng Xin thought for a while and said: "Seems to be no problem, but... this bit of foam isn't very sturdy. Zombies have such great strength, can it withstand the tearing?"

Zhang Su nodded with satisfaction: "Put the problems you two considered together, and it's about right!"

After saying that, he began to operate, leaving the part with the speaker opening outside bit by bit, and wrapping the rest in thick packing foam.

Next was wrapping tape outside the foam, which was the key step to prevent tearing. The packing tape brought back from 1101 had strong toughness and stickiness. Even if the zombies had great strength, it wouldn't be easy to destroy it in a short time.

Looking at the yellow ball in his hand, Zhang Su was very satisfied. He pushed the phone into it hard, and the small part exposed outside shrank into the foam ball, forming perfect protection. The most important speaker part wasn't covered.

He turned on his phone's ringtone, of course, only turning the volume up a little, then stood on the bed and threw it to the ground. The ball wrapped in the phone was full of elasticity, jumping around with the music. Even if he smashed it hard to the ground, the phone still sang happily.

"Mission accomplished. Let's go, let's see if our old-fashioned phone, which is sturdier than a brick, can withstand the test!"

Zhang Su tossed the ball in his hand, very satisfied. Originally, he had intended to stick a plastic bag outside the foam ball as a simple parachute, but considering it would add too much resistance when thrown, he gave up.

Watching Zhang Su walk toward the door, Zhong Xiaoshan pointed to the bay window, puzzled: "Brother Su, aren't we throwing it directly from here?"

The person trapped was at the far east side of Building 4, while Zhang Su's room was at the far west side of Building 3. Throwing it from here would lure the zombies between Building 3 and Building 4 to the west side, which was conducive to winning space for the person on the east side.

"Remember, even if you help others, you must not harm your own interests!"

Zhang Su habitually looked at the situation outside, touched the key in his pocket, opened the door, and then whispered: "Anyway, it's luring the zombies away, why not lure the zombies to other buildings?"

The two women suddenly realized and followed Zhang Su's footsteps quickly.

The group climbed up from the security stairs. When they were about to reach the twelfth floor, Zhang Su reminded the two to lighten their footsteps. He pressed against the security door to listen. The low, deep sounds coming from the throat entered his ears, as if a piece of old phlegm was stuck, which was very disgusting!

Zhang Su pointed toward the roof, not staying too long, and made up his mind to solve these guys sooner or later.

"Brother Su, it's locked!"

Zheng Xin pointed to a lock half the size of a palm on the door leading to the top floor, saying dejectedly.

This lock was obviously not the kind of thing that fooled people like the security door. It looked very sturdy and couldn't be opened easily. And in the current environment, they couldn't use the weapons in their hands to smash it hard; the huge movement would inevitably cause a zombie riot.

"Leave this kind of problem to me!"

Zhang Su handed the ball in his hand to Zhong Xiaoshan, then carefully took out the key from his pocket, found one of them, aimed it at the keyhole, and turned it gently.

Click.

Zheng Xin and Zhong Xiaoshan's eyes went straight.

"This... this, how do you have the key to this lock?"

Zheng Xin asked the huge question in her heart.

"What's strange about this? I have a good relationship with the security guard uncle. I said I liked to watch the stars and drink beer on the roof, so the uncle gave me a key. Is it hard?"

Zhang Su took off the lock and put it in his pocket.

In the past, Zhang Su was not only generous to his subordinates and business partners but also didn't skimp on some people he often met around him.

For example, the residential area's security guards, cleaners, and even the uncle who collected domestic waste. He would give them a cigarette whenever he met them, and because of this, he could get a lot of convenience.

"Good, good, good, the black-hearted landlord who extorted my money gave favors to others, humph!"

Thinking of this, Zheng Xin felt aggrieved. It seemed that others could take advantage of Zhang Su, but only she was suffering.

Thump.

Zhang Su knocked Zheng Xin on the head and said: "Now is teaching time, who told you to be distracted!"

After saying that, he gently pulled open the heavy door, and a dazzling sunlight shone on their faces, very blinding.

Whoosh.

Before the three could step onto the roof, a cold wind blew, making Zhang Su, who was holding the door to observe the situation, shiver.

"No problem!"

After saying that, he greeted the two people behind him to go up to the roof together.

The structure of the roof wasn't complex. There were cement walls nearly 1.5 meters high on all four sides, several smoke shafts standing in the middle, solar water heaters neatly arranged on one side, and dustpans and brooms placed in the corner. But the ground was covered with dust, showing it hadn't been cleaned for a long time.

There's still a recommendation slot this week, thanks to the support of book friends.

Many book friends are urging for updates, and I'm anxious too, but there's really no way to update more for now. The author assistant backend pushed an explanation about the recommendation mechanism, which very clearly stated the problem of adding updates during the new book recommendation period. The actual situation is that adding updates will instead increase the difficulty of being promoted to a recommendation slot, which I also don't understand...

(End of chapter) ===== CHAPTER 39 =====