The theatrical performance was a great success.

In two weeks, three performances of "Cinderella" were staged, and many residents watched it more than once. If the premiere attracted so many people thanks to publicity and announcements, the following two performances were entirely self-motivated. Some residents even went to the town hall to inquire when the fourth performance would be held.

Roland was overjoyed by such a response. Everyone was completely captivated by the story, and hardly anyone objected to why a witch was helping Cinderella. Next month, when "Midnight Rooster Crow" is performed, it will almost be exclusively for the poor. It's hard to imagine what the serfs will think of the witch who helps them in the play.

Another piece of good news was that the theater group had settled down in the town and accepted the existence of witches. After the three performances, Eileen took the initiative to find Roland and asked him why there were sudden "accompaniments" during the performance. Roland introduced Echo to her.

Under Nightingale's watchful eye, Eileen was surprised but did not show any revulsion or disgust. After regaining her senses, she became very curious, asking Echo many questions and having her demonstrate her illusionary sound technique several times. As a result, Echo also joined the theater group, becoming a hidden behind-the-scenes soundtrack master. To avoid accidents, Eileen only rehearsed alone with Echo when sound effects were needed, and the rest of the crew was unaware of this. There is no doubt that the next play will reach a new level in sound richness.

Another happy thing was that the castle was about to usher in the era of running water.

The towering water tower stood in the backyard of the castle. The tower body was welded from an iron frame in a triangular shape. The top of the tower was connected to an iron bucket with a diameter of two meters and a height of three meters. The bucket had a float valve, which could easily control the water level. Anna was responsible for welding the iron tower, then Soroya covered it with an anti-rust coating, and finally, with the help of Hummingbird's power, most of the weight was removed so that it could be erected and installed on the pre-poured concrete base.

Due to the height of the castle, the water tower in the backyard was higher than the one by the Chishui River, approaching twelve meters, almost level with the top of the castle. To prevent it from collapsing, Roland also added wall connecting pieces to the tower to connect it to the castle as a whole.

The steam engine was set up outside the backyard to supply water to the water tower, and the water source came from the well in the backyard of the castle. Counting carefully, this was the third-generation steam engine, and the biggest improvement was the great reduction in noise pollution.

Gaskets were installed at each connection point of the steam engine. These light blue gaskets were the color Soroya used when painting the sky, very soft and tough, which greatly reduced the vibration noise when the machine was working. The inside of the cylinder and the edges of the piston were covered with grass-colored paint, which reduced air leakage and improved work efficiency. Parts that were prone to vibration, such as exhaust pipes, were all replaced with coated hoses.

In order to prevent the steam engine from being exposed to the sun and rain and to further isolate the noise, Roland also built a small house around it. The walls of the house were painted by Soroya with a honeycomb coating, which served as a porous sound-absorbing material. Actual tests showed that even when the machine was running at night, the noise would not wake up the people sleeping in the castle.

However, Roland's attempt to make the steam engine automatically feed fuel failed. He originally envisioned using the flyball of the steam engine governor to control the wooden box valve. When the steam pressure dropped and the flyball retracted, it would open the valve and let the firewood in the wooden box roll into the furnace. But in this way, the governor had to be very large, otherwise the flyball's own weight could not drive the valve. Roland decided to give up after thinking about it. The wooden box could only be filled with firewood once, and after it was used up, it had to be refilled manually. It was better to arrange manpower to fill the water tank regularly every day.

The final step was to install water pipes into the house, including faucets, showerheads, pipes, and corresponding drainage pipes.

Since the castle was not like a newly built brick house in a residential area, with these holes left, the stone-stacked roof and walls made it very troublesome to改造. This step took nearly a week. For the sake of a better and happier life, Roland personally directed Karl to transform one room on the second and third floors into a bathroom.

Soroya's new ability once again played a key role. After spreading cement on the ground where the drainage pipes were laid, a thin layer of grass was painted on it, which not only had a waterproof effect, but also made it feel like walking on the prairie when entering the bathroom. Inspired by this, Roland simply had her paint the entire room. The ceiling was a vast blue sky and clouds, and the four walls could see the distant

Valleys and greens, the walls of the bathtub were crystal clear, like gems.

On the day the running water system was put into operation, the prince called all the witches into the bathroom to experience this great achievement.

The water tank in the backyard was already full of water. He turned on the faucet, and water poured out along the pipes.

"From today onwards, there is no need to fetch water from the well," Roland announced proudly. "There is no need to change the bath water every three days. Just stand under the showerhead and flick this switch."

"Eh? Where did the water come from?" Lightning stuck out her tongue and licked the endless stream of water droplets. "It's quite sweet."

Maisie poked her head out from under Lightning and did the same. "It's quite sweet, gu!"

Roland held down Nanawe, the third one who wanted to stick her head over. "Anyone who wants to drink water must boil it first. The water flowing from here can only be used for washing hands and bathing."

"This is...the principle of siphon, right?" Anna looked at Roland, her lake-blue eyes shining.

"What's that?" Hummingbird raised her hand and asked.

Under Ms. Curl's training, the witches in class have now developed the habit of raising their hands to ask questions.

"《Elementary Physics says that when the liquid levels of two containers are different, connecting the liquids with a pipe, no matter what the shape of the pipe, under the action of the liquid's own gravity, there is always a tendency to maintain the same liquid level." Anna explained while recalling, "The position where we are is lower than the water tower, so the water will continuously flow here."

"Absolutely correct," Roland praised. Being able to connect what you have learned with reality is worthy of being a genius.

"Then what about this?" Nightingale curiously pointed to the showerhead hanging high. "Why are there so many small holes at the bottom of it?"

Roland turned on the valve and let the tiny water droplets spray out. "For convenient bathing. As long as you stand under the showerhead, you can easily clean your body by yourself."

"So, you've been messing around in the castle for a week just to make bathing more comfortable?" Lily curled her lips and whispered, "Worthy of being a nobleman who likes luxury and enjoyment."

"Lily!" Curl frowned and said.

"It's okay," Roland waved his hand, indicating that he didn't mind. "The pursuit of enjoyment is one of the driving forces of human progress, and of course I am no exception." (。)"