Qi Niang hummed a small song and packed her dowry. The most important thing was a few large boxes. She is now putting some bags of lime in the box, because Li Chengdao said that the sea was very damp and many things would get damp and moldy. These limes were used to prevent moisture. The books Li Chengdao transported to the ship were also preserved in this way.

"Qi Niang, are these ships you designed?" At this moment, Li Chengdao, who was helping next to him, rummaged over the paper in the box and said with a shocked expression. Although he knew that Qi Niang was good at designing ships, he did not expect that the large boxes were filled with drawings of various ship types. How much time and energy would it take?

"Yes, but don't look at these drawings, there are actually not many ships, because the drawings of a ship alone need to be drawn. These are just the more successful ship types I designed, and there are some ideas that I think are more feasible. These are very important. After arriving in America, I can guide the craftsmen to build the ships on the drawings." Qi Niang replied with a smile at this time. For her, the most important thing in the dowry is these drawings, after all, this is her years of hard work and achievements.

"Then these boxes should be placed in the cabin where we live, so as not to be damaged with other things!" Li Chengdao nodded solemnly when he heard this. These may be Qi Niang's efforts, so naturally there can be no mistakes.

"I think so too." Qi Niang nodded and smiled at Li Chengdao's words. She was indeed worried about putting such an important thing elsewhere.

"Huh? What is this?" But at this moment, Li Chengdao suddenly found a special small box in a box, even with a lock on it, which seemed very mysterious.

"I didn't expect to bring this too." Qi Niang was stunned at first when she saw this small box, then she couldn't help but reveal a look of memories.

"What is this?" Seeing Qi Niang's appearance, Li Chengdao couldn't help but ask even more curiously.

"You'll know it yourself!" Qi Niang smiled again, and after saying that, she came to her dressing table, then took out a key from the drawer below to open the box.

What surprised Li Chengdao was that there were still drawings in the box. When he opened the drawings, he found that these drawings were not drawings for shipbuilding, but a very complex instrument. The brushwork should have been written by Qi Niang, but some notes in some places seemed to be written by Li Xiu, who was familiar to him.

"I'll take the exam and see how much I remember what my elder brother taught you. Can you understand what this thing is for?" At this moment, Qi Niang smiled and said.

"Test me? I haven't abandoned the things I taught in the past few years. Instead, I have applied some of the things I learned to reality. This thing looks like you and the teacher are designed together. I believe I can understand it!" Li Chengdao said unconvincedly when he heard Qi Niang's words. Although he admitted that he was indeed not as good as Qi Niang in his studies, he was not even unable to understand it.

"Hehe, don't talk big, you'll talk if you understand!" Qi Niang smiled mischievously. Seeing Li Chengdao's dissatisfied expression, she couldn't help but recall when she was studying together. At first, Li Chengdao was also dissatisfied with her, but she lost a lot of competitions. However, Li Chengdao was still a dissatisfied person. After losing, he worked harder, but in the end he couldn't beat him until he left.

Li Chengdao didn't want to understand what his wife was drawing, so he sat down and focused on studying the drawing. As a result, he soon found that the device was indeed very complicated. He even felt dizzy at first glance, and didn't know where to start. However, he soon found some notes written by Li Xiu, and he gradually understood the function of this device.

Simply put, this device can actually be divided into two parts. The first part is very simple, which is a large boiler for burning fire, which can burn water into steam. He learned these in Li Xiu's physics class, but the second part is more complicated. It seems that it is using the power of these steam to drive a huge metal wheel to rotate, but it is not very similar. For a moment, he couldn't figure out what this thing is for?

"Do you understand?" Qi Niang saw Li Chengdao frowning at this time, and immediately put down the work in her hand and sat beside him and asked.

"This..." Li Chengdao hesitated for a moment. In fact, he was indeed a little confused, but he was embarrassed to admit it, so he could only force himself to say, "This equipment seems to boil water. I remember the teacher said that the volume of water increases after it turns into steam. This equipment uses this principle to promote the rotation of the equipment. But what I can't understand now is, what's the use of this equipment even if it turns?"

"Yes, the principle of this steam engine is indeed like this. As for its use, it is too great. For example, it can be loaded on a boat and then drive a special oar to rotate, just like a car and a boat. However, the power of the car and a boat is people or a cow and a horse, and the steam engine can replace a man and a cow and a horse." Qi Niang explained with a smile. She had designed the car and a boat, but the car and a boat were limited by power. If it was too large, there were too many people or a cattle and a horse, and if it was too small, it had no practical value, so the development of the car and a boat was also greatly limited.

"Packed on the boat?" Li Chengdao's eyes lit up when he heard this, but then he asked with some confusion, "But can this thing have greater strength than cows and horses, and how big the ship can it drive, and how fast it can?"

"I don't know about these, because this steam engine was not built at all. It was my elder brother who used this steam engine to calm my heart in order to give me a hope. However, according to my elder brother, if this steam engine could be really built, it would definitely cause a huge change. It can not only be installed on a boat, but also on a car for textiles, water pumping, etc., and its power is far from comparable to that of a cattle and a horse." Qi Niang said again.

Hearing Qi Niang's previous words, Li Chengdao also knew what she said "hope" meant. He couldn't help but show a look of regret and hugged Qi Niang tightly in his arms. However, he was also a little lucky. Although he had experienced many twists and turns, the two of them finally got together.

I don’t know how long it took, but Li Chengdao said again: “Qi Niang, can we build this steam engine? Then we can load it on our boat and run faster. In this way, if you miss Mr. in the future, it will be convenient for you to come back to visit.”

"This is probably difficult." Qi Niang shook her head at this time, because Li Xiu said that steam engines have extremely high requirements for craftsmanship, and even the top craftsmen in the Tang Dynasty may not be able to be built, let alone that they are going to America, I am afraid that the craftsmen in the Americas are far inferior to those in the Tang Dynasty.

"It doesn't matter, we can create it slowly. Anyway, we have time. Even if our generation is not good, we can still give it to our sons and daughters. There will always be someone who can create it!" Li Chengdao said without discouragement. He never had any doubts about Li Xiu's words, and this steam engine is so important, so it is naturally worth investing a lot of time and energy.

"Go! Who wants to have a son and daughter with you?" Qi Niang was newly married after all. When she heard Li Chengdao's words mentioning her future children, her face turned red with shame, and she also pushed Li Chengdao with some anger.

"Hehe, we are all married, how can we not have children?" Li Chengdao's face was much thicker, and he smiled very proudly. Speaking of which, his younger brothers have married, and some even have children. Sometimes, he was very envious of his nieces and nephews. Now he can finally have a few children by himself.

"That's right, not only should I have to give birth, but I also have to give birth to a few more. After all, America is the most lacking in people!" Just as Li Chengdao finished speaking, a loud laugh came from outside, and then he saw the bearded guest laughing and walked in and said loudly.

"Ah!" Qi Niang didn't expect that the private words between her and Li Chengdao were heard by the bearded guest. She was so embarrassed that her face turned red and she turned around and was about to run inside. However, the bearded guest stopped her and said, "Qi Niang, don't be shy, I have something else to ask you!"
Chapter completed!