Doomsday: Humanity shrinks 100 times

Chapter 159 Smoke Bomb

Except for a few new survivors who joined the branch, most people have some impression of Lu Yuning.

Of course, it wasn't very pleasant at the beginning, but the person who started it is no longer around, so there's no point in bringing it up again.

Seeing the admiring looks in everyone's eyes, Lu Yuning had to exchange a few simple greetings, and the crowd then dispersed.

The purpose of this trip was to ask Chen Hong some questions, so Xu Qi also called him over.

At the branch, Chen Hong is the main force in construction, and many facilities cannot be built without him.

Chen Hong nodded slightly at him and said a few simple words of thanks. This man had always left a good impression on Lu Yuning.

He is a practical person. Although he appeared calm and simply expressed his gratitude, judging by his personality, he should have respected Lu Yuning very much.

Chen Hong's left arm, which had been cut off by himself, has been healed by Xu Lele.

The two exchanged pleasantries and got straight to the point.

Lu Yuning briefly told him about his needs, including the current problems and their current capabilities.

"Improve the shelter's protective capabilities?" Chen Hong pondered.

"Well, it's mainly counterattack," Lu Yuning nodded.

"In fact, the location where your shelter is built has good protection capabilities."

"Actually, some insects are not a problem, but last time..."

Lu Yuning also briefly explained the incident of the sparks. When Chen Hong mentioned the special power of pheromone marking, he also showed a look of fear. One could imagine how terrifying the scene was.

"In fact, in the military, it is more based on early warning and then coordinated counterattacks. It is rare to start a counterattack after the enemy reaches your doorstep." Chen Hong frowned, showing a somewhat embarrassed expression.

"Well, but we do have Xinyue's long-range detection capabilities."

Chen Hong thought about it and shook his head. "Her ability is to trigger it automatically, which means that a certain area must be continuously monitored. It's okay if there is a specific target, but in terms of early warning ability, she is not as good as a person with olfactory ability."

Lu Yuning sighed. She could understand what he meant, just like the spider's nest before.

After clarifying the target, Zhang Xinyue can play a huge role. However, she had no warning ability when the sparks attacked last time, unless she used her supernatural powers to conduct reconnaissance 24 hours a day.

However, people with special abilities are hard to come by and cannot be forced to come by. However, using insects to detect the smell of outsiders is also a good direction. Perhaps some insects can be raised and placed in fixed areas for early warning, which is almost like a guard dog at the door.
However, only Xu Qi can think of a solution in this regard, but Xu Qi also has to take care of the branch. Even if she agrees, it is not easy to control ordinary bees without intelligence.

"Why not try the trap? It does have a certain warning capability."

"Ok?"

"It's simple. Install some traps along the enemy's path. When the traps are triggered, they send some information back to the base, such as a sound."

Lu Yuning understood what he meant, but then frowned and said, "The shrunken humans are too small. Many devices will probably be difficult to implement, and I can't think of how to block the entire road."

"So why not start with the road itself? From what I understand, the road leading to the square isn't very wide. It would be better to convert it directly into the perimeter of the shelter."

Lu Yuning's eyes lit up: "Good idea!"

"But even so, traps are still needed to trigger the warning. Communication is also a problem. Your bombs still need people to activate them."

Lu Yuning nodded, roughly understanding Chen Hong's meaning. First, through road reconstruction, the road's access area would be restricted so that the traps could cover the entire accessible road surface.

Of course, people can also go around through the bushes on the side, but some traps can also be set in the bushes. There is always a possibility of being triggered in real or fake ways, and of course there is still some randomness.

However, the channel is still some distance away from the Weird Light base, so how to automatically transmit this information to the shelter is a problem.

In addition, Lu Yuning thought of another problem. This trap can be triggered by humans and insects, and it is easy to be triggered by accident.

Chen Hong lowered his head and thought hard for a long time.

Seeing that he was a little embarrassed, Lu Yuning was about to speak up to dispel this idea, but Chen Hong said, "Well... I do have some ideas, but even if this thing is made, it may not be sensitive. After all, the way this trap triggers the warning is somewhat dependent on luck."

Lu Yuning was stunned for a moment, then said with some surprise: "It's okay, just do your best."

"Okay," Chen Hong nodded.

Then the two chatted for a while, and Chen Hong explained the general method to Lu Yuning.

Lu Yuning nodded frequently, and was quite impressed by some of the tricks he came up with.

According to Chen Hong, the first thing needed was a bell-like device hung high up.

When the mechanism is triggered, as long as the rope connecting it breaks and the bell falls to the concrete floor, the sound should be enough to travel to the shelter.

As for the triggering method, it depends on a characteristic of Zhang Qian's supernatural power.

When an insulated object is deformed, the insulation loses its effectiveness.

Based on this feature, a diamond-shaped ring is made with an aluminum wire and ropes are tied at both ends.

Under normal circumstances, when subjected to force, the aluminum wire will be straightened and deformed.

Therefore, a support must be added in the middle in the initial state. When the trap is triggered, the support will be pulled away, and the aluminum wire will deform and ignite the ropes at both ends.

This will trigger the early warning device.

As for how to prevent insects from accidentally touching you, there is no particularly good method. You can only try your best to repel insects, such as sprinkling some pine oil nearby, which has a certain insect repellent effect.

However, the number of insects in winter is still relatively small.

Basically this is the principle, but of course it is still difficult to implement and requires on-site practice.

"This early warning device can be of some use, but it's just icing on the cake. The most important thing is to upgrade your long-range weapons, including launchers and shells."

"I've thought of that, but I don't have much experience with it. The thermite bomb is quite powerful right now, but it seems useless against armored enemies."

Chen Hong paused, then said, "Since you can light a fire now, you can try a smoke bomb. Compared to explosive bombs, they have no blind spots, but of course they are slightly less powerful. However, for a shrunken human, the smoke bomb's lethality may be quite significant."

"The smoke bomb seems good, where are the materials?"

"Military smoke bombs produce smoke naturally by exposing phosphorus to the air, but this material cannot be found in nature. However, you can try directly igniting rosin. When this material burns, it will produce a lot of smoke." Chen Hong suggested.

(End of this chapter)