Although the parts have been cast, no one except Su Cheng can understand what the steam engine is.

The steam engine is about to be assembled and debugged, and both the craftsmen and Cheng Chumo in the workshop were very excited.

Su Cheng was also very excited. He even called the children in the school over. Although the children in the school had just started to study, he felt it was necessary to let them receive some influence.

After all, we still rely on them for the development of science and technology in the future.

The craftsmen began to assemble steam engines, frames, wheels, etc. Su Cheng could be sure that there was no problem. Steam engines were the top priority. In fact, Su Cheng was not sure whether he could succeed in one go. After all, Su Cheng himself had never seen this thing with his own eyes, and he only understood the principles and structure of steam engines.

While guiding the craftsmen to assemble the steam engine, Su Cheng gave the children a detailed explanation.

Cheng Chumo and the others were looking forward to it. Although they didn't know what the steam engine was for, they were looking forward to it very much because the thing really looked very complicated.

"Master, the assembly is completed! There should be nothing wrong with it?" The craftsmen were also very excited. After working so long, they were finally about to see the results, which made them not excited.

Cheng Chumo and the others were even more excited because they were more looking forward to it.

"Okay? That's all? Why don't you move?" Cheng Chumo shouted loudly.

Su Cheng said loudly: "Fill water! Boil charcoal!"

The whirring flames started to burn, slowly the water began to boil, and gradually the piston began to move back and forth...

The craftsmen were immediately excited.

"It's moving! It's moving! It's really moving!"

Cheng Chumo looked at him for a while and was confused. That's it?

Have you been busy for so long to make this pole move?

The craftsmen cheered excitedly. What is there to be excited about? What is there to be cheering about?

Su Cheng looked at the steam engine that was starting to operate and looked pleased. He actually developed the steam engine. He didn't know whether the Tang Dynasty would enter the industrial era, but he was sure that the train would be opened soon.

Cheng Chumo took a photo of Su Cheng and asked in confusion: "We have been busy for so long, just for this? Just this pole moves?"

Su Cheng nodded and said, "Yes, it's for this!"

Seeing that Cheng Chumo and the others were still confused, Su Cheng patiently explained: "Put it with the wheel, and such reciprocating movement will become a circular movement of the wheel, which will make the wheels run. Wouldn't the car start to move?"

Yuchi Baolin said speechlessly: "Have you been busy with this for so long? I can just swing it hard!"

Su Cheng suddenly laughed: "Can you swing from Chang'an to Luoyang? But this steam engine can run from Chang'an to Luoyang as long as it keeps burning charcoal! And it still burns this kind of coal that no one wants to use."

In this dynasty, the rich burned charcoal, the poor burned firewood, and few people burned coal.

Yuchi Baolin opened his mouth and stopped talking. Although he was indeed powerful, he could not have swung from Chang'an to Luoyang.

But as Su Cheng said, as long as the fire is kept burning, this thing can really be transferred from Chang'an to Luoyang.

"Come on, everyone work harder and start assembling the frame!" Su Cheng said loudly.

The craftsmen were more motivated and began to assemble the frames in full swing.

Imperial Palace, the Political Palace.

Li Shimin asked in confusion while drinking tea: "Su Cheng has not come to attend the grand ceremony yet. What is this kid busy with? Since he returned to Chang'an, why has he been staying in Sujiazhuang?"

"Isn't it just that I went to the plateau to fight a few battles? Duke Lu and Duke of Britain were not as tired as that. Can this kid still be tired?"

Empress Changsun smiled and said, "Su Cheng is already lazy. After a year away from Chang'an, it is normal for the couple to be in harmony. It's pretty good. Maybe we can hold our grandson again!"

Li Shimin couldn't help but frown and pondered: "How old is Xiao Xier?"

Empress Changsun couldn't help but roll her eyes with charming eyes: "What does Xiao Xier mean? She is not big now, but she will be over one year next year? Are Gao Ming and Qingque just one year apart?"

Speaking of Li Chengqian, the atmosphere in the hall couldn't help but stumble. Li Chengqian's rebellion was forever painful for Li Shimin and Empress Changsun. After all, it was the eldest son they had high hopes for.

At this time, an eunuch came in and said respectfully: "Report to Your Majesty, Empress, Princess Changle is here."

Queen Changsun said in surprise: "Oh, Xiao Xier is here!"

The originally somewhat depressing atmosphere of Lizheng Hall suddenly became relaxed, and a smile appeared on Li Shimin's face.

"Daughter greets my father and queen!" Princess Changle greeted with a blessing, and the wet nurse held the child and followed her to greet her.

Empress Changsun went straight forward and took Xiao Xier from the wet nurse's arms, and smiled and said, "Oh, this little guy is sleeping soundly."

Princess Changle smiled and said, "I was awake just now. I was waiting for my black eyes to look around, but now I fell asleep again."

Li Shimin leaned his head and looked at the child's sleeping soundly, and smiled and said, "I still sleep so well when I see me. I am a lucky child."

Queen Changsun carefully placed the child on the soft collapse to make the child sleep more comfortable.

"What has Su Cheng been doing when he stays at home? Have you missed a few more big court meetings? If you hide at home, I will really beat him up!" Li Shimin said angrily.

Princess Changle smiled and said, "Father, the man is not lazy. He has been staying in the workshop these days, working hard all the time."

Li Shimin was stunned when he heard this, and said in confusion: "I'm busy working in the workshop for so long and sleeping. What's the matter? He, a dignified Duke, ignored the important affairs of the court, but ran to the workshop for work. Isn't it enough to just give me some instructions?"

Princess Changle explained with a smile: "I said I wanted to build a car that I could walk by myself without pulling or pushing."

Li Shimin was slightly stunned when he heard this, then laughed: "No need to pull or push, how could that car leave? Why didn't he build a car that could fly?"

Empress Changsun turned her head and smiled and asked, "Is it difficult to fly?"

Li Shimin couldn't help but speak after hearing this. It was indeed not difficult for Su Cheng to fly, but he still felt that Su Cheng's idea was a bit whimsical.

"Okay, it's not difficult to fly, but without pulling or pushing, how could the car move?" Li Shimin asked.

Princess Changle shook her head slightly and said, "I don't understand this either, but the husband said he would be built soon. When the car was built, the father would naturally know."
Chapter completed!