When Renault left, he took ten hot air balloons, this time they were fully loaded, except for enough food and water for the passengers, the rest of the cabins were all used to fill barrels of flowing balsam, and Renault didn't know if he could find such suitable hot air balloon fuel in other places in Nanzhang, and it was always right to prepare it first.

And the fuel of flowing balsam, Renault is also ready to use it to make incendiary bombs, although its burning intensity is far from comparable to gasoline, but Renault has never found oil in Dachu, and among the fuels he knows, flowing balsam is already the best.

As long as there is a stable station, Renault will find a way to make alcohol, dilute the balsam with alcohol, and do not need to add thickeners such as sugar, the balm itself is very sticky. If an accelerant can be found, the effect will be similar to that of a fuel bomb.

In a world like Da Chu, which is similar to the ancient times of the earth, if you want to become a qualified military director, you must learn to set fires, and throughout history, more than 50% of the well-known battles are inseparable from fire and water.

Don't think it's easy to set fire, in the years when there were no incendiary bombs, if you want to make the fire burn easily, if you want to burn big, it's not simple, the enemy is not stupid, you know how to set fire, people naturally know how to put out fires. With incendiary bombs, it's completely different, and you can make arson, a very violent thing, very artistic.

The Air Force, incendiary bombs are very much needed.

The level of pilots taught by Song Zhe varies greatly, the flight unit composed of ten hot air balloons gathers and scatters, and the poor earth immortal has no choice but to fly around in the air, guiding the rookie pilot hand in hand, so that this air force will not fly and scatter.

The day was fine, but when it was a little dark, Song Zhe gave the order to land. In fact, hot air balloons are a means of transportation that can fly in the sky day and night, anyway, as long as they float in the air, it is impossible to think of traffic accidents, but Song Zhe doesn't dare, everything in broad daylight can fly away, if it really flies overnight, I'm afraid that there will be a hot air balloon left at dawn, and where the rest will fly, the ghost will know.

The speed is slow, it doesn't matter, just practice take-off and landing, although the hot air balloon landing is not as dangerous as the aircraft carrier landing, it is also a bit difficult. And this is the South Palm, the hot air balloon can only land on the top of the tree, which is even more demanding for the driver.

Da Chu's supplies are too scarce, if there is a strong enough rope to connect the ten hot air balloons, it can be used to fly at night, and everyone will be thrown together.

Renault told Song Zhe his thoughts, that night, after the drivers' meal, began to get busy, the rainforest is the most indispensable is the vine, looking for the right one, peel off the outer skin, break up the fibers inside, hand-knitted, one night, actually weave a rope thousands of meters long, don't look at only the thickness of the finger, stronger than the thick vine like a child's arm.

Looking at the results of a busy night, Renault was dumbfounded, Da Chu's materials were scarce, but Da Chu's hands-on ability and the use of nature really amazed Renault.

The selected rattans are finger thick, very tender, but tough enough, break up the fibers and then weave them into ropes, after a few days of exposure to the sun, brush the balsam while drying, and so on, the bearing capacity of this rope can be increased several times, as long as three or five groups, you can connect the two hot air balloons together, do not have to worry about being blown off by the wind.

The only disadvantage of this rope is that it is afraid of fire, and the dried rattan fiber itself is flammable, and with the flowing balsam that has been brushed several times, it really doesn't burn too quickly.

After three days, the ten balloons were finally able to fly day and night, and the speed of the balloons connected by ropes had dropped by 10 to 20 percent, a loss of speed that was nothing compared to the benefits gained.

First of all, Song Zhe finally doesn't have to worry about getting lost if there is a hot air balloon, secondly, he can fly at night, and the most important thing is that as long as he is responsible for finding the air current, all ten hot air balloons can fly in the right direction.

Of course, this air force is not just ten hot air balloons, but also three hundred black-haired knights. In the first three days, Hei Mao flew very easily and leisurely, the hot air balloon was too slow, Song Zhe had the heart to let Hei Mao pull the hot air balloon to fly, but Renault decisively refused.

You have to practice, hot air balloons are not so easy to control, and the Da Chu people who don't know anything about meteorology have to fly for a long time if they want to make a hot air balloon like a finger.

Now there are only ten hot air balloons, and when the whole sky is covered with airships in the future, can you expect the black hair to fly?

By the fourth day, the black hair is obviously not good, the hot air balloon flies slowly, but it may fly day and night, the pilot in the hanging blue can take turns to eat and sleep, no matter how strong the black hair endurance is, it can't compare to the hot air balloon.

That night, Renault had a new idea, adding a suspension platform under the hot air balloon to provide a resting platform for the black hair and the knight.

A whimsical idea, when the hot air balloon was lifted off again, Renault proudly looked at the hot air balloon hanging with black hair and knight, and his mood was refreshed.

No matter how slow the hot air balloon is, it is much faster than a convoy walking in the rainforest, not only does it go in a straight line, but it doesn't have to cut down trees to cushion the road, but it is not slow at all. On the ground and in the sky, it is difficult to feel the movement of a hot air balloon with the naked eye, but the God of Wealth clearly told Renault that in the past ten hours, the average speed of a hot air balloon is 38 miles per hour.

The average speed of the convoy can only reach forty miles, not per hour, but per day.

That is, the speed of a hot air balloon, the distance it flies out in one day, is equivalent to twenty days in a convoy.

For the first three days, it only flew during the day, and then deliberately circled a few times, and even so, on the seventh day after leaving Tianyun Valley, the hot air balloon caught up with the convoy. In seven days, the hot air balloon detachment flew more than 5,200 miles.

Seven days of personal experience let Renault know that hot air balloons are artifacts in Nanzhang and must be manufactured in large quantities. Ten hot air balloons, mounted rest platforms, can transport thousands of people at a time, the conditions are a little harder, but they can deploy troops in a large range and long distances in a short time.

In addition to transporting troops, the dynamic transport capacity is no worse than that of a pack car, a small hot air balloon is larger than a four-trailer pack car, and the most important thing is that it can fly day and night without being restricted by the ground type.

If there were 1,000 hot air balloons, Renault would be able to load up the entire fleet and fly directly into the sky, going wherever it wanted.

Now the key issue was silk, and Renault needed a lot of silk. Asbestos has been solved, piled up in the Tianyun Valley, rattan hanging blue, ropes, these are not problems, and the most in the south palm is these things.

"Ruan Ling, Lan Yunxi, you come with me. Renault walked into the long-lost RV, sat on the chair and breathed a sigh, don't look at the hot air balloon, he has the best position, and the number of people in the gondola is less than other hot air balloons, but the blue space is limited, and it flies in the air, and the living conditions are not comparable to the RV.

The worst thing is to urinate and urinate, urinate better, pay attention to the wind direction, don't pee on yourself, and it's quite spectacular. Poop, that taste who tries to know. Renault has already thought that the next time the hot air balloon goes out, it will be equipped with a toilet.

Waiting for Renault to drink the hot tea sent by Mo Xiang, he said: "You two are most familiar with Nanzhang, we need a lot of silk now, where can we buy it." ”

After thinking about it, he added: "It's okay if you can't buy it." ”

Of course they knew that Mr. wanted to make a hot air balloon, and Lan Yunxi flew back with Renault in a hot air balloon, she naturally knew how convenient this thing was, and it was definitely not comfortable, no matter how bad it was, it was much stronger than walking on the ground.

But this is Nanzhang, my husband, silk can usually only be used as an ornament, like a dry toast, sewn a piece on the chest, indicating that my brother is rich.

Not to mention that there is not much silk shipped here, and even if it can be shipped, not many people will buy it. Needless to say, the natives are not even fed, so what do they use to buy expensive silk? Even toast, they don't want to wear silk clothes.

This is different from what the Da Chu people think, pure silk clothes, in the tropical rainforest of Nanzhang, are not comfortable at all, Da Tusi will naturally have a few sets of silk clothes, only when meeting guests, or celebrations, will they be taken out and worn.

Usually, even if it is toast, he prefers to wear fine linen. Silk looks good and smooth, but when you sweat, you will understand that silk does not absorb sweat, and when it is attached to the body, it is only uncomfortable.

Therefore, the entire Nanzhang, including the Nanzhang Mansion with the largest number of Chu people, the number of silk is also extremely limited, and if you want silk, the nearest is Shunde Mansion, and the Wuyang Mansion farther away has the largest number, which is the largest outlet to the sea in Great Chu, and one-third of the goods are loaded from there to the sea.

It's really not good, even if it is a Dingjun city, guarding the golden road, there is a large amount of silk among the goods sold by the pack gang.

Shunde Mansion, Renault called up the satellite map on the God of Wealth, locked his location, and saw that the distance was okay, more than 7,600 miles, if he walked on the ground, Renault would die directly, but flying in the sky was different.

When the hot air balloon flies all day, it can ensure a speed of not less than 25 miles per hour, and it is normal to run 6 or 700 miles a day.

Seven thousand six hundred miles, at most half a month is enough, one round trip a month, such a speed, although it is quite pitiful, Renault feels that it is acceptable.

After all, he now has ten hot air balloons on hand, which can carry twenty-five tons at a time, and can transport at least fifteen tons of silk at a time, excluding flight personnel, necessary food and water, and weapons.

"Shunde Mansion, buy at least fifteen tons of silk, who wants to take on this task?" Renault asked as he looked at the two women in front of him.

This feels a bit like the plot of an ancient game, the lord issues a task and asks his subordinates to pick it up, do you want to make a monthly comment?