Ordinary people can dive for about 10 meters without the help of any tools. The slightly worse physique is only about 5 meters. The professional can dive to about 30 meters.

Since the deeper the dive, the greater the pressure of the water on the body, when diving to about 10 meters, the pressure is about 10^5 pascals, which is equivalent to one standard atmosphere. If you go down to the next meter, you will increase the standard pressure by 0.1 atmosphere, and the human body will be uncomfortable. With regular training, professionals can dive to about 30 meters.

He Zilong once saw a news in later generations that in Zhaoshu Island in the Xisha Islands, fishermen used homemade ventilators to go into the water, as if the ancient coastal pearl fishing natives also used this method to go to the sea.

Of course, this method can only dive more than ten meters, and no matter how high it is, it will not work.

Fortunately, He Zilong's ship was already very large, and it sank not far from the beach of different shades. You can barely even see a little bit of it, and it's hard to find it when the weather is bad on the sea, but today when the weather is good, you can find the place where the ship is sunk if you look for it with a small wooden boat.

The biggest danger comes from how to open the container, which requires a key. Of course, this will be difficult for other people's affairs, and it is not a problem for He Zilong, because when the captain left, he brought the key, and now just let the natives remember which key is which box, and then go down to a few crew members and take turns to identify. Find something that's easy to find and easy to move out of, and you can do it in less than a day or two.

Of course, the first time I came here, I believe it is still easy to do as much as I can, and I don't force it, such low requirements.

"What ...... are you?" asked He Zilong, pointing to a leather bag-like thing in Xiao Min.

"This is what I made with your materials, and I asked people to make them overnight, and there are several of them, when we used to dive in the nearby river, we used resin materials, which allowed us to stay underwater for ten minutes, and I used this to breathe. Now with your special materials, I believe I can dive for a longer time, but for safety, I will only dive for ten minutes before coming up......," Xiao Min replied.

He Zilong took it and looked at it for a few minutes, and had to admire everyone's similarity. Even if they are uneducated natives, they still have little instinct. And the wisdom of the working people for thousands of years should not be underestimated!

Just like there were no condoms before, in addition to the ancients using the cecum of the lamb to make condoms, fish bladders are also a common substitute, which is reflected in the movie "Martial Arts" and has also been used by Europeans.

Nature is amazing, and many modern items, if not required to be refined, actually have many alternatives.

You have to eat bread, you have bread trees, you have to use paint, you have to paint trees, you have to poison poisonous plants, you have to have ropes, and there are many trees that can be used as ropes, and they are very strong. To build a house, there will even be a house with natural trees.

If you want an electric lamp, there is a lot of resin on it, and it can even be used as an oil lamp, and it will not go out overnight, and it can be used for a long time.

Rubber directly has rubber trees, and even some tree methods can be directly used as gasoline, but it is not used. If it weren't for the lack of time to study, He Zilong would have even heard and indirectly seen that there are many new plants, even new animals and insects that have not yet been discovered outside.

It is said that many animals have perished, but at the same time as they perished, in the nineties, there were still many animals and plants that were not discovered by humans, and were not included in the computer or collected in the library. Not in human cognition!

Of course, that's another story.

-

After several days of salvage, with the help of keys and guides, the natives successfully followed He Zilong's instructions and found a large number of so-called artifacts in their own medium-sized steamer.

Of course, the names of these fetishes are only relative to the natives.

Beautifully crafted little bowls, cups, plates, and saucers, well, well, are actually bargains on the Chinese side, and they are not worth a few bucks, and they are not antiques. Of course, this is an absolute treasure in the eyes of the indigenous people.

It's so colorful and ingenious. Although it is also said to be fired from clay, it is smoother than jade. What else can it be if it's not a baby?

Then, there are shoes made of plastic (a word that the natives just learned from He Zilong's mouth). These shoes are as light as the lightest straw sandals, yet many times stronger than wood. When the natives put it on, they found that their feet were very comfortable, and they would not be soaked and soaked even if they were stained with rain and mud when they walked. Waterproof, strong, beautiful, and durable (unless it breaks, this thing will not degrade for hundreds of years if it is thrown into nature!)

Not only these natives, but also modern people who have been barefoot for a long time have immediately changed into these shoes, and the more they like it, they are reluctant to take them off even when they sleep.

"Look what I found, Pepsi Cola? and, well, Arctic Ocean soda? It's all there, Robust's fruit milk, and Jianlibao ?...... "Grandma's, if I hadn't found it out now, He Zilong really didn't know that the ship shipped these Chinese Internet celebrity products in the nineties."

However, it is easy to understand that when the empty ship returns from China, it seems that it can attract foreign products, and naturally there are some Chinese specialties. But to keep up with the trend, that's all there is to it.

For example, this Jianlibao was basically a drink that every household liked to drink in the 90s, and if there were guests at home, this Jianlibao was also an indispensable table drink.

There is also this high Lego drink, this chocolate-flavored milk, the taste is very fragrant, I believe many post-90s generations have drunk it when they were young.

He even found a large amount of malt milk essence, which was a very luxurious drink in childhood, only the children of wealthy families could drink it, and now there must be many children who have never seen this kind of malt milk essence.

As for Coke, there is really no famous brand in China that can be compared with Coca-Cola and Pepsi for the time being.

When drinking Coke, He Zilong's gang of modern people are fine. The natives didn't know how to drink it, and when everyone opened it, they let the soda squirt inside. But they were still reluctant, so the natives also used their tongues to spray the light on their bodies and sucked them back with their tongues.

It's okay if two female natives do this, this TM group of men do this, this picture is so beautiful, He Zilong doesn't want to remember it anymore.

However, seeing that Xiao Min was also sprayed, He Zilong immediately hugged her back to the cave, as his own woman, He Zilong was very happy to help her suck the cola soda or something all over her body with his tongue, hehehe.

The fragments of the drunk cans will not be thrown away, and can be folded and ground into sharp arrows. In the jungle, metal is a more practical thing than gold, after all, gold is too soft to be used as a real weapon.

Finally, someone even found the waterproof treatment inside, after removing the packaging, as well as the battery, some modern music boxes that barely worked, and some goods.

So, when these goods were shipped back to the tribe.

A sense of confusion arises, and the indigenous tribes of a primitive society seem to have experienced it overnight. Leapfrogging development - from the Stone Age in the morning to the Iron Age in the evening. Then, the next day, it evolved into a trend of running directly towards the electrification era......

Of course, the knowledge level of the indigenous people is still in the same place, but the daily necessities have undergone changes in heaven and earth.

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(End of chapter)