Zhou Nan asked people to get some charcoal and put it aside to prepare. He also instructed the men to open the folded hot air balloon and hoist it from all four corners. They also asked people to connect the willow frame to the hot air balloon, and then put charcoal in the long-necked iron stove and ignited it.

  Lao Zheng Tou and several craftsmen stood next to the hot air balloon, looking up at the hot air balloon that was gradually inflated, and the hot air balloon nearly three feet high made Lao Zheng Tou and others stunned.

  Zhou Nan stood in the willow frame, skillfully burning the long-necked iron furnace more vigorously, Guo Xingzu, Shen Ding, Sun Rong and others stared at Zhou Nan's every movement, for fear of missing a detail.

  Under the scorching of the iron furnace, the hot air balloon finally stretched out from the shriveled state to the maximum, and staggered with the willow frame and Zhou Nan in the willow frame to fly off the ground. Fortunately, Zhou Nan had the willow frame tied to the stone pillar on the ground with a rope at the beginning, so it didn't fly immediately.

  Zhou Nan beckoned Lao Zheng Tou and Guo Xingzu to come up to the willow frame, and instructed Sun Rong and Shen Ding to wait for him to wave the colorful flag on it, Sun Rong and Shen Ding and others pulled the rope and dragged the chariot back to the courtyard.

  Lao Zheng Tou stood in the willow frame excitedly and nervously, holding the edge of the willow frame, and did not dare to move. Guo Xingzu followed Zhou Nan's instructions and carefully watched the fire so that the hot air balloon could be raised faster. Zhou Nan also explained the role of the furnace fire from time to time, so that Guo Xingzu could better understand the principle. Regarding the physics of the launch of Lao Zheng Tou's divine car, Zhou Nan still talked about the five elements theory of "fiery flames", so that Lao Zheng Tou's admired five bodies fell to the ground, and praised Zhou Nan for being able to understand the truth of the divine car from a casual sentence in "Shangshu".

  When the hot air balloon rises into the air, you can see the cottage in full view, the courtyard of the house is the size of the palm of the hand, and the people on the ground are like insects and ants. The cottage under the heavy snow can vaguely recognize the winding wall. Although there was no wind on the ground, there was a north wind blowing south in the sky, blowing the hot air balloon south. Fortunately, there is a rope connected to the hot air balloon on the ground, otherwise, it is estimated that the three of them would not have thought about going back to the cottage today.

  It's just that he only cares about taking off, but Zhou Nan forgot to wear more clothes. Just when half a pillar of incense was lifted into the air, Lao Zheng Tou shouted that it was cold. Zhou Nan waved the pre-prepared colored flags in the direction of the house, and then felt the hot air balloon tighten down and began to fall slowly.

  Zhou Nan asked Guo Xingzu to stop burning the fire, so that the hot air balloon could reduce the momentum of its ascent and fall as soon as possible. The hot air balloon, which had lost its heat source, slowly deflated and began to descend faster. When it was still seven or eight feet away from the ground, the hot air balloon was obviously deflated a lot, and at this speed, it was estimated that it would hit the ground, and Zhou Nan was busy letting Guo Xingzu continue to burn the fire, so that the hot air balloon would be more relaxed when it landed.

  Under Guo Xingzu's operation, the car finally landed on the ground, but the hot air balloon was still in a bulging state, and the furnace fire was still hot.

  After Lao Zheng Tou and Guo Xingzu went down, Zhou Nan hurriedly asked the silver bottle to bring him a thicker leather coat - with the launch of the magic car just now, Gao Yun and Yu Liyan and others in the backyard were all attracted to the front yard.

  After putting on the leather coat, Zhou Nan beckoned Shen Ding and Sun Rong, two carpenters, to come up, and with Guo Xingzu's experience just now, the two of them naturally wore an extra piece of clothing.

  As usual, Zhou Nan was on the side, and the two carpenters, Shen Ding and Sun Rong, began to take care of the hot air balloon. For these two people, they are more focused on how to control this magic car, so the two of them also keep asking Zhou Nan this and that.

  The carpenter deserves to be the first of the hundred craftsmen in ancient times. Not only is woodworking the source of traditional skills, but also the basis of other techniques. In ancient times, the requirements for a good carpenter can be said to be knowledgeable about astronomy, geography, historical evolution, cultural symbols, various historical systems, ingenuity, and aesthetic perspectives, in order to be regarded as an excellent carpenter. After some operation and inquiry, Shen Ding and Sun Rong quickly understood the mystery of the control of this god car, and they no longer needed Zhou Nan's guidance, and they could freely control the god car up and down.

  When Shen Ding saw the hand-cranked fan blade, he immediately understood that this was a device used to change the flight direction of the god car, and tried to shake the fan blade to see what the effect was, but found that he could only change the direction slightly.

  "Dazhai master, these three fan pages are very ingenious, more wonderful than those straight fan blades, presumably the Dazhai master ordered people to do. Although the Southern Dynasty also had a fan cart used to roll and blow pure grain and rice, it was not so ingenious. It's just that the hand is definitely laborious to shake and can't last. Shen Ding pointed to the hand-cranked fan blade and said to Zhou Nan, Zhou Nan just smiled and didn't speak.

  Shen Ding stroked and examined the hand-cranked device left and right, squatted down and compared, and talked to Sun Rong about the water rotation and grinding, and what the wheel said, and finally said to Zhou Nan, "Lord of the village, the villain can remake a connecting wheel, which should make the wind stronger and more labor-saving." ”

  Zhou Nan was overjoyed when he heard this, and when he was in Xianghe City, he just asked the carpenters in Yanjing City to make a hand-cranked fan blade in a hurry, and he didn't have the time and energy to make careful improvements. Now Shen Ding is sure that he can improve this blade, and the natural effect will not be bad.

  "Dazhai master, the lifting of the god car depends on the strength of the firepower, and the villain can make a mechanism for this furnace to control the firepower, which can make the god car rise and fall faster." Sun Rong also hurriedly said to Zhou Nan. These craftsmen naturally understand that their value lies in whether they can use their skills to help Zhou Nan. Just like Guo Xingzu among them, with the gunpowder configuration, he is now a very valued person in the cottage. Now that Sun Rong was invited by Zhou Nan to get into the car, naturally he was not asked to come up for sightseeing, so Sun Rong was also looking for improvements. After discovering it, he also hurriedly mentioned it to Zhou Nan.

  "Good. Both of them really have extraordinary skills. Zhou Nanxian praised the two and said, "The two of them have also seen that the god car can only float with the wind now, up and down, if you can control the direction freely, connivance is a slight change of direction is also a contribution to the rebuilding of the god car." I will reward you both. In the next few days, this magic car will be handed over to the two of you, and the two of you will gather the rest of the craftsmen, if there are suggestions and suggestions to improve the magic car, they will be rewarded! ”

  After getting Zhou Nan's promise, Shen Ding and Sun Rong couldn't hide their joy, and started to do a big job after they were ready to go down. Zhou Nan saw that the time was almost up, so he waved the colorful flag and asked the people below to pull the rope and lead the chariot down.

  After going down to the ground, Zhou Nan repeated his words to the rest of the craftsmen just now, and urged everyone to show their abilities, and all the craftsmen saw that Zhou Nan had arranged such an important thing for his people on the first day of the new year, and they all felt that they were greatly used, and naturally they were thinking about how to improve things after going back. Like Song Chungui, please collect x Song Chungui.