Under the shouts of several craftsmen on the ground, the firewood on the hot air balloon was extinguished, and the hot air balloon lost its lift and gradually fell to the ground. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

Zhang Guanghang, the waiter of the Criminal Department, looked at the hot air balloon that could rise and land at will, and his expression was a little dazed when he saw a god.

Zhang Guanghang was sent by the Son of Heaven to commend Li Zhi. Li Zhi went to the south of the Yangtze River and beheaded Qian Qianyi and Zhang Shenyan and other national thieves, and the Son of Heaven issued a holy decree to praise Li Zhi.

Li Zhi had Han Jinxin to inquire about the news, and knew that Zhang Guanghang also helped him say a few words in the court, so he warmly entertained Zhang Guanghang and asked him to see his hot air balloon.

After Zhang Guanghang saw the hot air balloon, he was very surprised, and even a little out of shape. It's no wonder that he is rare and strange, but in this era, flying is an impossible dream. Because it is impossible, flying is often associated with religious beliefs. Whether it is the flying gods of Taoism or the Arhat of Buddhism, being able to ascend to the sky is a kind of power of the gods.

However, in Li Zhi's place, a few ordinary craftsmen actually relied on the power of technology to fly into the sky that only belonged to the gods.

In the Ming Dynasty, Taoism was the state religion, and in Taoist mythology, the palaces of the gods were all in the sky. As long as you can fly high enough, you can see the gods. This hot air balloon flies up and flies so high, can you go straight to the sky, chat with King Tota about family life, and play chess pieces with Tai Shao Laojun?

This made Zhang Guanghang feel surprised, surprised, and even a little scared.

As for the generals and officials under Li Zhi's command, although they were also surprised by the magic of hot air balloons, because they had followed Li Zhi for ten years, they had already seen all kinds of ingenious inventions and creations, and they were all a little surprised.

Zhong Feng looked at the hot air balloon with a smile and said, "Grandpa Guo, this hot air balloon is not safe, Zhong Feng also wants to go up and sit down!" ”

Li Xing chirped: "Zhong Feng, you also want to fly?" Do you think you'll become a god when you fly up? ”

Zhong Feng replied: "Li Xing, don't you think that I, Zhong Feng, have never seen this hot air balloon, I stood by and watched when Grandpa Guo drew drawings for those craftsmen, and I knew the principle of this hot air balloon better than you." ”

Hearing that Zhong Feng, the general soldier of Liaodong, understood the principle of hot air balloons, Zhang Guanghang was in good spirits and hurriedly pricked up his ears to listen to Zhong Feng's explanation.

Zhong Feng coughed and said, "Grandpa Guo made it clear at that time that this hot air balloon uses the principle of thermal expansion and cold contraction. The flame is hot, heating the air and making it expand and lighten. When the air becomes lighter, it fills the cavity of the hot air balloon, and the whole hot air balloon becomes extremely light, and it can naturally float in the air due to the atmospheric pressure. ”

Hearing Zhong Feng's explanation, many of the old people under Li Zhi's command understood and nodded yes. These old men have been following Li Zhi for a long time, and they have more or less heard Li Zhi popularize some basic scientific knowledge, so they can naturally understand Zhong Feng's explanation.

But Zhang Guanghang was dumbfounded. As for what Zhong Feng said about "air", what "thermal expansion and contraction", and what "air pressure", it was completely confusing to the second monk.

Zhang Guanghang thought for a long time, and finally asked Zhong Feng: "Chief soldier Zhong, will this mortal fly so high, will it surprise the immortals in the sky?" ”

Hearing the words of Zhang Guanghang, the waiter of the Criminal Department, Li Zhi almost laughed out loud, and finally finally held back.

Zhong Feng was stunned, and he was a little unsure of his mind for a while. The Taoist belief in the Ming Dynasty was very popular, and several emperors themselves were Taoist priests who sought immortality through alchemy. In the concept of the Ming people, there must be immortals in the sky. Even if Zhong Feng learned some basic scientific knowledge from Li Zhi, he did not abandon his belief in immortals. And mortals ascended to the sky with the help of the power of hot air balloons, which seems to indeed break the flying privilege of the gods.

Zhong Feng said hesitantly: "Grandpa Guo is a fairy-like figure, and the gods in the sky know it. We work under the command of Grandpa Guo, even if we disturb the immortals, we will definitely be forgiven. ”

Zhang Guanghang heard Zhong Feng's explanation and nodded frequently. Everyone trusted Li Zhi's power very much, since Li Zhi was the knowledge imparted by the seaside immortal Taoist, he naturally had some relationship with the heavenly immortals.

Li Zhi was a little speechless when he heard Zhong Feng's chaotic explanation, and finally couldn't help laughing.

Li Zhi secretly asked whether this basic science education should be started. It's just that Li Zhi's territory is now hungry and thirsty for new-style intellectuals, and the grassroots talents cultivated by the school are in short supply, and they are divided among officials at all levels, courts, and tax bureaus. Li Zhishi does not have time for students to study physical chemistry anymore, because that will prolong the time for students to complete their studies.

However, Li Zhi also wondered if it was possible to provide basic science education among young children and craftsmen. If a group of craftsmen master the basic science, Li Zhi's workload can be reduced - if Li Zhi invents and creates something in the future, he will draw the drawings and hand them over to the craftsmen, and the craftsmen will be able to rely on the knowledge they have learned to make them.

Li Zhi was thinking there that the hot air balloon had landed on the ground. In the cabin made of bamboo, Qi Liu, the head craftsman of the plate armor forging workshop, and four other craftsmen walked out and waved at Li Zhizuo.

"I've seen Grandpa Guo, I've seen all my lords!"

Li Zhi patted Qi Liu's shoulder with a smile and said with a smile: "Qi Liu, what material is your hot air balloon made of?" ”

Qi Liu was patted on the shoulder by Li Zhi, a little excited, and said, "Grandpa Guo, according to the drawings you gave us, we tried to sew hot air balloons out of canvas at the beginning. But the hot air balloon that came out of this leaked and did not fly. We ended up using tanned pigskin as balloons, and we were able to fly. ”

Li Zhi walked up to the hot air balloon and looked at it, and said with a smile: "How many times have you flown it?" Security is not safe? ”

Qi Liu replied: "I have flown more than thirty times recently, and I fly every few days. There have been no accidents. ”

Li Zhi nodded, and suddenly said to Zhang Guanghang: "Master Zhang, I'll take you to fly up and have a look!" ”

Zhang Guanghang was stunned, his face flushed with excitement all of a sudden, and he asked a little nervously, "Can I fly?" ”

Zhang Guanghang regretted a little after saying this, he felt that he was acting like a dirt bun. No matter how you say it, you are also an official from the capital, how can you look like a fool who doesn't know anything in a small city like Fanjiazhuang.

Li Zhi waved his hand and shouted, "Come on!" ”

In the envious eyes of everyone, Zhang Guanghang trotted into the cockpit with Li Zhi. Qi Liu laughed, and burned the firewood in the burning iron bucket again. The heat inflated the deflated pigskin balloon little by little, and in the exclamation of everyone, the hot air balloon rose into the air and flew into the sky with Li Zhi and Zhang Guanghang.

Qi Liu and another craftsman shook the propellers behind the cockpit vigorously, trying to control the direction of the hot air balloon.

This type of propeller has limited wind power and can only be used when there is no wind, such as today. If there is a windy day, it is better not to take off the hot air balloon.

The hot air balloon gradually flew high into the air and reached a place about a hundred meters above the ground. Qi Liu reduced the fire, so that the hot air balloon no longer rose, but floated in mid-air.

Zhang Guanghang seemed to be a little afraid of heights, and his face was a little pale as he stood in the cockpit. He plucked up the courage to stand on the edge of the cockpit and looked down to see Fanjiazhuang at his feet. After two expansions, Fanjiazhuang presents a right-angled shape like a building block at the foot. The city is dotted with factories, and horse-drawn carts carrying raw materials and goods come and go.

Zhang Guanghang looked at the blue sky on the top, then at the city under his feet, shook his head, and praised: "True immortal means." ”