There was a martial arts training ground in the backyard of the Huo Mansion. When the servant led Jian Ning there, she heard a rumbling sound and the sound of running water. When she arrived at the training ground, she discovered that there were two large light bulbs hanging on both sides of the weapon rack.

She was secretly amazed. The light bulb was a bit similar to the old-fashioned large light bulbs of modern times. Seeing Huo Jincheng dancing with the silver spear in his hand tightly, she did not ask him. She followed the electric wire and saw a small wooden house. The rumbling sound came from the wooden house.

The wooden house was locked. Jian Ning turned around and almost bumped into Huo Jincheng's arms. He shook the key in his hand and said, "Let me show you." He opened the door. The sound and the sound of running water became much louder. Jian Ning looked down and found that there was an underground river under the wooden house. He could vaguely see something like a windmill spinning rapidly underneath.

"How is it?" Huo Jincheng asked, a little proudly.

"Brother Ma instructed you to make this thing?" Jian Ning pointed at the windmill below. "What are those things around the windmill?"

"Not exactly. The craftsmen painstakingly crafted it after many days and nights." Huo Jincheng asked the servant to bring the lamp from the weapon rack over. "Take a look and see if it's exquisite."

Jane Ning looked carefully and saw a large wooden board underneath with a wooden windmill attached to it. A circle of spoon-like objects were densely inserted around the wheel in a clockwise direction.

“There are copper spoons stuck around the windmill.”

"What about this one? It's also called a windmill?" Jane Ning nodded his chin downwards.

"The emperor named it the Bronze Buffalo."

Jane Ning thought it should be called a hydroelectric generator, but since the emperor had given it the name, she didn't bother to argue. She looked at the wires and asked, "What's the cover on it?"

"Bullhide."

The cost is a bit high, as it requires cowhide, gold thread, and copper. I'm afraid it would not be popular among ordinary people in ancient times.

Huo Jincheng seemed to guess what she was thinking. "These are too expensive to make. The Emperor said candles are better. Now, only the Imperial Study uses them. The craftsmen are still figuring out how to use other items as replacements. By the way, where did you get that lantern? The craftsmen still haven't figured out what to use there."

Before, Jian Ning lied to him and said that it was brought from her hometown. Now that she has acknowledged that she is the legitimate daughter of Prince Pingnan, she naturally can no longer say that it was brought from her hometown. After thinking about it, she had to say: "I don't remember. It must have been given to me before I was struck by lightning. I can't remember."

"You always have adventures and a lot of new and interesting things." Huo Jincheng curled his lips slightly.

"What are you laughing at?" Jian Ning noticed that his laughter was quite meaningful. When she pressed him, Huo Jincheng replied, "Although making these lanterns is expensive, it can also be very profitable. There are many wealthy families in the capital, and many people have installed them in their homes because they find them novel."

"When you drink water, remember the well-digger. If it weren't for my lantern, you wouldn't have been able to make this. Shouldn't I get the reward?"

"I can't make the decision on this. The craftsmen were all hired by His Royal Highness the Crown Prince, and all the money they earned went into His Royal Highness's pocket. The most I can do is ask His Royal Highness for you."

"Forget it, I don't care about that little reward. I came to you to give you something. Let's go to the front hall."

When they reached the front hall, Jian Ning handed him the wood carving and the small note. "There's also a wooden box. I'm using it to store other things."

Huo Jincheng's eyes lit up when he saw the wood carving. "I asked a craftsman to carve this for Ah Man Niang. After she left, I searched the whole house over there but couldn't find it. Where did you find it?"

Jane Ning had already thought of an excuse, "I was just cleaning the house and swept it out from under the bed."

Huo Jincheng remembered that he had looked under the bed before because he wanted to leave the wood carving to Ah Man, but he was not sure if he had missed any corner, so he did not ask again.

He stared at the wood carving in a daze, his thoughts seemed to go back to the distant past, and his expression gradually softened. Jane Ning glanced at him sideways, thinking that he liked this kind of fairy-like woman, and the figure of Yue'e appeared in her mind.

Jian Ning felt that Yue'e and Huo Jincheng were quite a good match.

It’s a pity that Yue’e is also a member of the Ganao tribe and is wholeheartedly thinking about rebuilding her tribe. I’m afraid that Madam Huo and the Grand Tutor will hardly accept her.

Huo Jincheng put down the wooden carving and prepared to pick up the small note, but his gaze suddenly froze. Jian Ning followed his gaze and saw that his eyes were fixed on the slug pendant. "Are you afraid of slugs?"

"Slug?" He raised his eyebrows and looked at Jane Ning.

"The country kids call it a slug."

Huo Jincheng frowned. "That's quite fitting. I've never liked this thing, but Rou'er wore it like a treasure. After she realized I didn't like it, she never wore it again. I thought she had thrown it away long ago."

"Never mind, at least she wore it. I'll ask Man'er tomorrow. If she likes it, I'll give it to her. It's always a keepsake from her mother."

Jian Ning took the wooden pendant and looked at it. For some reason, she didn't feel anything when she looked at it, but she felt an inexplicable burning sensation when she held it in her hand. She thought that A Man Niang was the saint of the Ganao tribe, and this thing might be a little strange, so she quickly put it down.

"I've given you my things. I'm leaving now."

"Please stay," Huo Jincheng called her. "I'll ask the kitchen to prepare some food and wine. Tell Brother Ding to come over and have a few drinks with me."

"Don't let him drink too much." He added, as if afraid that Jian Ning would refuse.

"Okay, I'll tell him." Jian Ning turned and walked a few steps, then remembered something and turned to ask him, "I see there's a utility room over there with some jujube wood in it. Do you want to use it?"

"The house is sold to you. All the things inside belong to you. You can do whatever you want with them."

"Okay, let's go."

Jane Ning came out originally wanting to go see Ah Man and the others, but then she thought that since they didn't come to see her, it meant they were having a great time, so she went straight back to the villa.

She went over to tell Ding Youtian that Huo Jincheng invited him to drink, and he raised his eyelids to indicate that he understood.

When Jian Ning came out, she sent a message to Ma Fuquan first. She wanted to use the jujube wood to make a wooden bicycle. The roads in the capital were relatively flat, so it would be convenient to ride it to go out to buy groceries. Firstly, it would be fun. Secondly, she was inspired by Huo Jincheng. There were many rich men in the capital, and they all liked to hunt for novelty. She was idle every day, so why not make an invention and make a fortune?

She didn't understand these things herself, so she asked Ma Fuquan if it was possible to make a bicycle made entirely of wood. If so, she asked Ma Fuquan to draw a sketch and send it to her, and then she would go to Huo Jincheng and ask him to find a craftsman.

After a while, Ma Fuquan sent a message saying that he could give it a try.

Jian Ning was thinking about making a fortune and earning money, while Yunniang found a cheap inn to save money. She was still wearing the same silk and satin she wore when she was a concubine in the Huo Mansion, but she was targeted by thieves. When she woke up in the morning, all the jewelry she brought from the Huo Mansion and the little silver she exchanged for the jewelry were looted.