After entering the bushes for about half an hour, Hou Yi said in a low voice (which can ensure that the clansmen behind can hear it, but also not disturb the other prey too loudly): "The front is almost to the safety hole, everyone prepare." ”

Ah Hu asked, "Uncle Houyi, are you almost at the safety hole again?"

Hou Yi smiled and said, "Yes." By the way, Tiger, I don't know if you have found the law of setting up the safety hole?"

Ah Hu thought about it, shook his head, and said he didn't know.

Hou Yi said: "The safety cave is set up about every half an hour, which is also the experience we have summed up over the years of hunting. If the safety hole is set too close, it will be a waste of time to dig the cave, and it will not be necessary. If it is set too far away, it will not be able to avoid danger in time, and the meaning of the safety hole will be lost. After many years of experience, the half-hour route is the most suitable distance for setting the safety hole. Ah, Hu, these are the experiences that countless clansmen have exchanged for their lives, and we must remember them. ”

Ah Hu nodded and carefully wrote down Hou Yi's teachings.

The doctor also added: "Ah Hu, although you have supernatural powers, you must not underestimate the safety hole, the last time the clan encountered the giant tooth demon wolf pack, if it wasn't for the Cong and the safety cave, my tribe's hunting team would have been wiped out, so even if you encounter a spirit beast, the safety hole also has important protective significance." ”

After the doctor finished speaking, he thought of his best friend, Satoshi, and was inevitably a little sentimental.

Ah Hu heard that his grandfather sacrificed his life for the tribe, and naturally he was sad in his heart, but he still carefully wrote down everyone's teachings.

Cong is a representative portrayal of the history of the human race, sometimes even if you are as wise as a demon, it is often useless in the face of absolute strength, and when the strength is strong to a certain extent, it is not wisdom that can compete.

For example, a strong person who has comprehended all the 84,000 laws in the world, after obtaining the power of creation, will be invincible in the universe, and the reason why this kind of strong person is called the strongest is because there is no power in the world that can kill them, even the opponent of the same strongest person cannot kill them.

In the world of cultivating immortals, people like Cong who can't cultivate, even if they have wisdom, they won't be taken too seriously, this is a world where strength is respected.

Just as everyone was talking, they came to the vicinity of the safety hole.

Ah Hu used his divine sense to sense that there was a wild boar in the safety cave, turned his head and said, "Everyone be careful, there is a wild boar in the safety hole." ”

Everyone laughed happily when they heard what Ah Hu said.

A wild boar generally weighs about a pound, but now it is summer, the vegetation is luxuriant, and the food is abundant, especially the wild boar, which is an omnivorous animal.

Pigs, sleep when they are full, eat when they are full, and it is easy to gain weight.

Some people had already lit firewood and threw it into the safety hole, and sure enough, they saw a fat and strong wild boar.

The experienced hunter said: "This time I made it, this wild boar is at least 220 catties or more, enough for the whole family to eat for two days." ”

Hou Yi said: "Ah Hu, you take a break, see how the clansmen hunt in the safe cave, everyone start performing!"

"Whew"

Along the way, everyone didn't hit a single prey, so they all let Ah Hu this kid contract, and this time he can finally show his skills.

Because the cave is quite far from the ground, the people need to use ropes to get up after the evacuation.

As a result, many animals fall into safe holes and have difficulty getting out, waiting to be hunted by hunting teams.

The clansmen have long been skillful in long-term hunting, and they have a very tacit understanding, and everyone knows very well what to do.

I saw that the archer, who was not carrying dry firewood, pulled out his short blade from his waist and went around to cut some bushes and branches.

The rest of the clan used flint to make a fire, and after the fire was made, they lit a lot of firewood and threw it all into the cave.

At this time, the archers put the newly cut branches at the entrance of the safety cave and blocked the entrance of the cave with branches.

Da Niu's father and other clansmen with melee weapons stood evenly at the entrance of the cave, ensuring that there were people at each cave entrance, all armed with weapons, on full alert, and if the wild boar desperately strung upward, it would be slammed on the head.

Ah Hu asked Hou Yi puzzled: "Uncle Hou Yi, why do you use branches to cover the entrance of the cave?"

Hou Yi explained for Ah Hu: "There are two reasons to cover the entrance of the cave with branches, the first is to produce more smoke and suffocate the prey, but remember to cover it with branches, if you cover it with boulders or other things, the entrance to the cave will be too dead to extinguish the flames in the cave." The second reason is to cover the entrance to the cave, so that the prey cannot find the exit below and is suffocated. ”

Ah Hu listened to Hou Yi's explanation and had to be proud of his clansmen.

All I heard was the wild boar roaring and pounding inside the burrow. Even if you stand on the top of the cave, you can feel the whole ground trembling, which shows how strong this wild boar is.

After about a quarter of an hour, only the occasional crackling sound of burning branches could be heard inside the cave.

Hou Yi continued: "It is estimated that it is almost, and the wild boars are all roasted if they continue, let's put out the fire." ”

Ah Hu saw the archers cut down more bushes, branches, and trunks to cover the entrance to the safety hole, and then the other tribesmen used their weapons or tools to dig up the soil in the surrounding ground.

The excavated soil is all covered with branches on the entrance of the safe cave, and the soil is not covered much, only a thin layer, but it is evenly enough to cover the entrance of the cave.

The purpose of this is to extinguish the fire by air, and the combustion must have three elements: combustibles (branches), oxidants (oxygen in the air) and temperature (temperatures that exceed the ignition point of combustibles).

The entrance of the cave is covered with a thin layer of soil, the purpose is to isolate the cave, cut off the air exchange of the cave, and when the little oxygen in the cave is consumed, the combustion will be extinguished naturally.

After the cave is isolated, it will initially produce a large amount of carbon dioxide and carbon monoxide due to lack of oxygen.

Carbon monoxide, in particular, is an extremely toxic gas that can effectively poison prey. Carbon monoxide kills animals by depriving the blood of its ability to transport oxygen, so animals poisoned by carbon monoxide can be safely eaten without any toxicity.

The steps of hunting prey in a safe cave are interlocking, which shows the powerful wisdom of Cong.

After the entrance to the safe cave was covered with soil by the clansmen, everyone was looking forward to the harvest for a while, and today was definitely a good day.

Only one wild boar in the safe cave is enough for all the tribesmen to eat for two days, more than 200 catties of meat, and when they return to the tribe, they are picking some wild fruits, and they can eat a beautiful wild boar feast when they go home.