Just before the sun completely set below the sea level, the figures of Chen Zhe and Meixi appeared outside the camp.

It's just that the two didn't come back by car, but walked close to the small tree house.

Yan'er, who was standing by the window, saw the figures of the two people from a distance, which made her a little surprised - when the two people left, they obviously drove out, but when they came back, how did they turn into hiking?

"Huh, where's Brother Chen's car?" asked Yan'er curiously.

Hearing the movement, Da Qiao also walked over.

"What's wrong Yan'er, Chen Zhe and Meixi are back?"

"Well, but they didn't drive back. Yan'er said.

Da Qiao looked out of the window and found that Chen Zhe and Mi-hee had indeed returned on foot.

"Maybe it's a car breakdown, it's just a car made of solid wood...... Being able to run for two days is already an extraordinary performance. Da Qiao said unexpectedly.

It wasn't until Chen Zhe and Mi-hee returned to the treehouse that everyone knew the truth of the matter.

"The engine is out of gas, and the fuel in the tank should have been burned clean in the past two days...... Chen Zhe shrugged.

"Is the fuel tank of the marine engine so small?" Xiao Qiao was a little speechless, "it has only been running for two days and it has run out of gas." ”

"Yes. "This is one of the disadvantages of marine engines. ”

"What then? This car won't work? The island has limited resources, so I can't find any gasoline or diesel......," Da Qiao said worriedly.

"Gasoline and diesel are made from crude oil, which does not exist in nature, so there must be no such ......things on the island," Chen Zhe nodded, "but this does not mean that there are no other alternative fuels for cars, and I believe I will definitely be able to come up with a solution." ”

The girls nodded their heads in encouragement, but there was no hope for it.

Looking for an alternative fuel to oil or gasoline?

Not to mention the wild survivors on the islands, this is a once-in-a-century problem for environmental groups around the world.

And at the same time.

In the live broadcast room of Wilderness Survival.

The picture of Chen Zhe's car breaking down also passed simultaneously.

The host Zhu Ranran saw that Chen Zhe's "open-top car" was abandoned alone in the suburbs, and there was no way to return to the camp with Chen Zhe and Meixi, which made her feel a little emotional and a little sad.

"The poor car, just two days after it was built, broke down because it ran out of fuel...... It looks like the tank capacity of a marine engine is simply too small. ”

"yes. This marine engine itself is designed for short distances, and the fuel tank is installed with the engine, so its endurance is extremely poor, and it often needs to be refueled after several uses. A guest who knows a lot about this said.

"So in this way, does Chen Zhe still have a chance to start the car again?" Zhu Ranran asked worriedly, "You can't just cause the whole car to be scrapped because there is no fuel, right?"

"This is also something that can't be helped, after all, fuel is the blood of the car, without blood, how can the car move?"

The guest shook his head and said,

"Unless Chen Zhe can find a way to solve the fuel problem, the car will have to be scrapped. ”

"Then where does Chen Zhe go to find fuel? Will there be natural fuel resources on the island, such as oil?" Zhu Ranran asked again.

The guest smiled bitterly and shook his head: "This is not very likely, oil has always been the rarest resource, the whole world is fighting for oil resources, even if this island is rich in materials, it is impossible to really contain such a precious resource as oil."

In addition, even if this island contains a lot of oil, Chen Zhe does not have the ability to extract oil, which requires a very professional team and tools, and cannot be dug up by a person with a shovel.

In the end, let's take 10,000 steps back and say that even if there is really oil on the island, Chen Zhe will extract the oil. However, oil is still not the same as fuel, and oil must undergo a certain chemical processing before it can become an energy source for the engine......

In other words, it is completely impossible for Chen Zhe to create fuel by himself. ”

"......I see," Zhu Ranran nodded after hearing this, and then suddenly thought of a solution, "Wait, I know, although there is no natural fuel on the island, the program team must have prepared fuel supplies for the contestants."

Chen Zhe can ask the fans for help and ask the fans to reward him!

The guest also nodded lightly: "This is indeed a solution, and it seems to be the only solution." ”

Another guest immediately questioned: "But with all due respect, Chen Zhe's current number of fans is not much, right? The materials of the program team are quite expensive, how can his fans afford to reward him with such expensive props?"

Zhu Ranran made a suggestion: "With Chen Zhe's current popularity, it may indeed be impossible to let fans give rewards, but isn't there still Da Qiao, Xiao Qiao and Ouyang Meixi! ”

"That makes sense. The questioning guest nodded slightly, and then couldn't help but sigh with emotion, "Alas, it's a pity, I didn't expect that even if Chen Zhe is such an excellent player, he will inevitably have to ask fans for rewards in the end." ”

Night is falling.

Lighting the oil lamp, Chen Zhe's small tree house was peaceful.

Sitting by the window, Chen Zhe leisurely drank a glass of mint water, which can give people a cool comfort in this hot rainy season.

At this time, Meixi walked over lightly and sat down opposite Chen Zhe.

She was still thinking about the car.

"Chen Zhe, do you have any ideas about finding fuel for cars?" she asked with concern.

"Idea...... There are a few. Chen Zhe smiled and said, "It's just that we still need to see if we can put it into practice." ”

Meixi nodded, and then proposed: "I have an idea, since the program team can provide rubber boats, then they can definitely provide fuel for rubber boats......

Fuel is a complex chemical product that I don't think we can make with the resources on the island alone, so I'll try to ask the fans for help tomorrow and see if they can support us.

But as you know, I'm just a newcomer, and I have a limited number of followers, so I may not be able to succeed. But at least that's the way, isn't it?"

Listening to Perfect Xi's suggestion, Chen Zhe was quite moved in his heart.

In order to help him solve the fuel problem, Mi-hee actually offered to ask fans for help.

You must know that Meixi is just an artist who has just debuted, and the number of fans is really limited, and artists at this stage often cherish their feathers very much and will never do anything excessive.

Meixi directly asks fans for help, which is equivalent to openly asking for a reward, such behavior is easy to be criticized, and it is even possible to be regarded as a black spot.

So for Mi-hee, the stakes are too high.

Chen Zhe immediately shook his head and vetoed Mi-hee's suggestion.

"No, Mi-hee, don't do that.

For you, now you have to pay attention to your image, and don't do this kind of thing that affects your image. ”

Chen Zhe said,

"I can solve the fuel problem myself, and even if I can't, it's not a big deal. Wouldn't we be able to live on an island without gas and without that car?"

Mi-hee calmed down and thought about it, and felt that this was indeed the case.

She didn't force it, but smiled and nodded, "Well, since that's the case, I won't interfere in this matter anymore." ”

"Hmm. Chen Zhe smiled at her, and continued to take the mint water in his hand and drank it.

But at this moment, an idea came to mind.

……

As the night deepened, Chen Zhe and the girls fell asleep together, the island at night was quiet and peaceful, and the temperature in the small tree house was cool and comfortable.

Nothing was said all night.

Chen Zhe woke up early the next morning, and the reason why he woke up first was because he had a plan that had to be carried out secretly.

He's going to get the car's fuel out there, and the process can't be discovered.

While the camera brother was also resting in the tent provided by the program team, and didn't notice that he had gotten up, Chen Zhe quietly slipped out of the tree house and walked to the convertible car in the distance with some supplies.

This time, he was carrying lamp oil from tung oil and wine from grapes, two seemingly unrelated things, but in fact they were able to formulate a very effective new energy source.

In another parallel world that Chen Zhe has crossed, the world's resources have begun to gradually deplete, and people have begun to explore new and clean energy sources to make the world sustainable.

Although conventional fuels such as gasoline and diesel are highly energy efficient, the number is eventually decreasing significantly, and a large number of new energy sources have come out, one of which is biofuel.

The so-called biofuel is a new type of fuel formed by using vegetable oil (such as soybean oil, peanut oil, or tung oil oil currently used by Chen Zhe) or animal oil (butter, sheep fat, lard, etc.) as crude oil and ester conversion with methanol or ethanol.

The energy efficiency of this type of fuel can be completely comparable to diesel and gasoline, and it can achieve the role of running machinery.

The process of preparing this biofuel requires a manual heating.

Chen Zhe lit a bonfire with dry wood next to the car, then set up a casserole, and then poured tung oil and alcoholic wine into it, waiting for the temperature to rise and the two would produce an ester conversion reaction.

In the absence of a catalyst, the optimal temperature for the reaction between the two is 235 degrees Celsius, which is difficult to achieve under normal circumstances, but Chen Zhe can upgrade the flames of the campfire through the item upgrade system.

By precisely manipulating the temperature, Chen Zhe quickly helped the raw materials in the casserole to carry out a chemical reaction, and the bio-oil and ethanol were combined with ethanol to form fatty acid ethyl ester, which is also the chemical component of biofuel.

After a period of reaction, the liquid in the casserole completely changed its shape, the original lamp oil was clear and transparent, and the wine was also clear red, but now the liquid in the casserole has become layered, part of it is a clear grease liquid, and part of it is formed into cotton wool.

The next thing to do is to let it stand, then filter out the batting-like material in the lower layer, and the remaining clear greasy liquid is biofuel, which is the fuel that Chen Zhe needs most.

After more than an hour, the rest was complete.

Chen Zhe first filtered out a portion of the biofuel and poured it into the Coke bottle left over after drinking it yesterday.

Immediately after his eyes were locked on the Coke bottle, the system immediately identified the fuel made by Chen Zhe.

[Item detected: A bottle of low-quality biofuel with low purity.] 】

"Tsk...... Dog system, you don't give face. ”

Chen Zhe couldn't help but say depressedly, and then glanced at the popularity value required for upgrading.

You can upgrade for 50 points, which doesn't cost much.

"Level up!"

Chen Zhe made a decision, and the biofuel was immediately upgraded.

[A bottle of low-quality biofuel with low purity] - upgrade - [A bottle of ordinary biofuel with considerable purity].

"The purity is considerable, and it doesn't necessarily drive a marine engine. This marine engine should have used diesel, and the combustion efficiency of diesel is already very high, at least the purity of biofuel must be raised to a certain level before it can replace diesel to bring up the engine. ”

Chen Zhe thought about it in his heart, and immediately upgraded the biofuel for the second time.

Upgrade!

[A bottle of ordinary biofuel of considerable purity] - [A bottle of high-purity high-quality biofuel].

Seeing this, Chen Zhe's heart was finally steady.

"High-quality biofuel, this should be enough, right?"

Lift the Coke bottle and pour the biofuel into the tank, which has become quite clear in color.

Knock, knock......

Three bottles of fuel were poured in, and the fuel tank was finally filled, Chen Zhe immediately began to try to ignite the engine, holding the rocker arm and pushing it quickly and vigorously in the same direction.

One, two, three......

At the same time, Chen Zhe's heart was full of apprehension.

Because he is really not sure whether the upgraded biofuel can replace diesel to drive the engine, you must know that the engine has very strict requirements for fuel, and the slightest difference in the pool may lead to incompatibility between fuel and engine.

And just when Chen Zhe pushed the fifth, the engine actually started.

"Tutu Tutu Tu ......"

The familiar sound similar to a farm vehicle sounded in his ears again, and the behemoth began to move forward slowly, Chen Zhe hurriedly turned to the front of the car to control the direction, after all, the steering wheel of this car was in the front row.

Since he was the only one to control this time, he didn't dare to drive the car too fast, and only used first gear to move forward slowly, which was not much faster than walking.

Ten minutes later, Chen Zhe, who rewoke the car, returned victoriously, and at this time, only Meixi and Da Qiao got up, and Yan'er and Xiao Qiao were still sleeping.

Hearing the movement outside, the two of them walked to the window in shock, and then they saw that Chen Zhe actually drove the broken down car back, which was unbelievable!