Wolf Feng was hammering and studying the goblin in the stone cave, and a large part of the entire box was filled with fuel, and the lever-like thing should be a handle to control the direction and height of flight.

The machine control is not the imaginary internal combustion engine control, but the ingenious mechanical production, and looking at the appearance of those parts, each one looks like it is hand-grinded.

"Ah Feng, can this thing really work?"

Sakara sat quietly on the feather bed and looked at the busy wolf Feng and asked.

A trace of excitement flashed in Wolf Feng's eyes, and he wiped the black oil on his face casually:

"Yes, this thing is very similar to the structure of a golem, but it is more elaborate, and I can't believe that tens of thousands of years ago goblins have been able to study machines to this extent. ”

Whether the goblin flying machine can be used or not, it still needs further research, there is a groove inlaid with magic crystals, the magic crystals that have long been discarded were thrown away by Wolf Feng, and the fuel also has eyebrows, Wolf Feng carefully scraped out a little residue from the bottom of the fuel tank that had already dried up into mud, and the smell was very similar to the fruit that Wolf Feng Sakara had eaten in the past two days.

This reminded him of the various fruit trees in front of the goblin shop that spread all the way to the waist of the gourd canyon, there were three types of fruit trees, and the fruit they produced was also of different colors.

Wolf Feng observed that every distance he passed would be a huge fruit tree that was exceptionally thick. Around the huge fruit tree, it is smaller than the ancient tree in the middle.

After 10,000 years of unpaid attention, the fruits of these fruit trees took root, and the young fruit trees grew again and spread to the waist of the canyon, long since they were the same as before.

"Sister Kara, look!"

Wolf Feng took a tree branch on the ground of the stone cave and carefully sketched a layout map, on which there were only three large different dot-like areas. As soon as this picture came out, Wolf Feng confirmed his guess even more, these fruit trees were indeed planted artificially at the earliest.

Shakara glanced at the picture on the ground, and didn't understand why Wolf Feng, who was studying the goblin flying machine, suddenly drew such a strange picture, and wondered:

"What is this, and what does it have to do with that flying machine?"

The wooden stick in Wolf Feng's hand connected the dots and pointed at the three areas respectively, explaining:

"These are the location maps of the first fruit trees in the canyon, the dots are red fruits, there are about 700 trees in the whole orchard, the circles are yellow fruits, about 500 trees, the least blocks are blue fruits, there are 100 fruit trees, and there are very horizontal boundaries between their respective distribution areas, I suspect this is the proportion of fuel!"

Wolf Feng told Sakara that the fuel might be made from these fruits, and Sakara was not stupid, so he quickly thought of the crux of the matter, and said:

"You mean the fuel ratio is 7:5:1?"

"It's not too accurate, after so many years, who knows how many of these fruit trees have died, it is likely to be other proportions, but there will always be a day when you experiment slowly!"

Wolf Feng is very confident, the probability of realising it from a mathematical point of view is not small, and looking at the confident and slow Wolf Feng Sakara is also happy, but looking at the empty groove of the goblin flying machine inlaid with magic crystals:

"What about the Magic Crystal?"

Wolf Feng smiled without saying a word, raised his head and pointed to the fat big bird flying in the sky:

"These fat birds are also demonic beasts, but I don't know if its magic crystals can be used as energy cores. ”

Don't look at what Wolf Feng said lightly, but his heart is heavy The entire valley has only seen this kind of magic beast so far, and it is still flying on the cliff, if the magic crystal of the big bird does not work, even if the fuel ratio is tested, it will be useless. And they had to find another way to get out of the canyon, but it was very difficult for even Wolf Edge to climb up such a high vertical cliff, let alone Sakara without legs.

As for letting Medusa little snake hold the woven grass vine and then climb up with the help of the grass vine, Wolf Feng has not tried, but every time the grass vine either falls or is driven down by those big birds, and petrification cannot be petrified so many big birds at once, after hundreds of failures, Wolf Feng can only discourage the plan of climbing the cliff.

These fat birds are so stupid that they don't even need the help of the wolf's edge, the little Medusa snake has already captured a few fat giant birds with petrified wings and returned.

I have to say that the food eaten by the Titans is really good, the fat big bird is enough for Wolf Feng and Sakara to eat for several days, and fortunately the giant bird does have magic crystals in its body, although it is inversely proportional to its huge size, it is better than nothing.

Wolf Feng and Sakara picked fruits during the day to study the fuel ratio, and slept in each other's arms at night, and lived quite a full life, during which it was estimated that the one-eyed titan was short of food again, and came to the canyon to catch the giant winged bird, and the two could only pretend to be quails and cowered in the stone cave motionless, and quietly watched the one-eyed titan leave.

"Damn it!"

Wolf Feng threw the leaf bowl in his hand to the ground, and without hesitation, stepped on the sprinkled pulp.

More than ten days passed in a flash, but Wolf Feng still did not test the correct fuel ratio, and the growth layout and quantity of fruit trees were very good to delineate the range for Wolf Feng, but even so, the two of them used the goblin oil lamp brought from the goblin store to test day and night, but they couldn't study the correct ratio.

"Ah Feng, don't be discouraged, maybe you will come out if you try again...... ”

The wounds on Sakara's face have healed, but because of the poor treatment, there are scars one after another, even on the body, the two have lived together for so many days, and they have already seen each other frankly, and the last layer of window paper has not been pierced, because even Sakara herself does not know that she is dragging the snake's tail...... Ahem......

But in any case, the two are far more like husband and wife than real couples.

Wolf Feng glanced at Sakara gently, her white face and hands had already been dyed into a little cat with various colors of jam, and she seemed to want to cover the scars on her face for Sakara, looking at the eyes full of love Wolf Feng suddenly calmed down, and said with a long sigh of relief:

"I see...... Carla. ”

Reluctantly cleaning up the jam on the ground, and taking out a few bowls of leaves and fruits to continue experimenting, Shakara thought for a while:

"Ah Feng, have we forgotten something, it stands to reason that after so many days of testing, he should have a result. ”

Wolf Feng's hand moved slowly, and he also lowered his head and thought:

What have you forgotten, and what else you haven't taken into account? raw materials, equipment, ingredients, containers......

That's right!

As he thought about it, Wolf Feng's eyes suddenly brightened, now that he had been doing experiments with leaf bowls, why didn't he just do experiments in the container?

The container in question is nothing else, of course, but the goblin flying machine itself!