The theatrical performances were a great success.

Three performances of "Cinderella" in two weeks, many of the people watched it more than once, and if the premiere was only watched by so many people under publicity and notice, the next two were completely spontaneous. There were even consuls who went to the town hall to ask when the fourth performance would be.

Roland was overjoyed by the response, and everyone was completely absorbed in the story, with almost no objections to why it was a witch who helped Cinderella. By the time "Midnight Rooster" next month comes, it will be almost exclusively for the poor people, and I don't know what the serfs will think of the witches who help them in the play.

Happily, the crew settled down in the town and accepted the witch's presence - after three performances, Irene approached Roland and asked him why there was a sudden "accompaniment" during the performance, and Roland introduced her to the echo.

Under the nightingale's covert observation, although Erin was surprised, she did not show any disgust or disgust, and after coming back to her senses, she still seemed very curious, and asked questions around the echo, and let her demonstrate the illusion several times. As a result, Echo joins the crew as the master of the soundtrack behind the scenes - to avoid accidents, Erin only rehearses with Echo when it is necessary to match the sound effects, and the rest of the crew is unaware of this. There is no doubt that the next drama will reach a new level of sound richness.

Another piece of good news is that the castle is about to usher in the age of running water.

The towering water tower stands in the backyard of the castle, the tower body is welded by an iron frame, in the shape of a triangle, and the top of the tower is connected to an iron bucket with a diameter of two meters and a height of three meters, with a float valve in the barrel, which can easily control the height of the water surface. The tower was welded by Anna, coated with an anti-rust coating by Soloya, and finally removed most of its weight by the hands of a hummingbird so that it could be erected and mounted on a pre-poured cement base.

Due to the height of the castle, the water tower in the backyard is taller than the one by the Chishui River, approaching 12 meters, almost the same as the top of the castle. In order to prevent it from collapsing, Roland also added wall pieces to the tower, so that the water tower and the castle were connected as a whole.

The steam engine was set up outside the backyard to supply water to the tower, which was fed from the well in the castle's backyard. After all, this is the third generation of steam engines, and the biggest improvement is that noise pollution has been greatly reduced.

At each connection point of the steam engine, gaskets were added - this light blue gasket is the color of Zoroa's painting of the sky, which is so soft and flexible that it greatly reduces the vibration noise of the machine when it operates. The inside of the cylinder and the edges of the piston are covered with grass color, which reduces air leakage and improves work efficiency. Parts that are prone to tremors, such as exhaust pipes, have been replaced with coated hoses.

In order to keep the steam engine out of the sun and rain, and to further isolate the noise, Roland also built a special room around it, and the walls of the house were painted by Zoroa with a honeycomb paint to serve as a porous sound-absorbing material. Practical tests have shown that even when running at night, the noise of the machine does not wake up the sleeping people in the castle.

However, Roland's attempt to make the steam engine feed itself failed to do so. He originally envisioned that the flap of the wooden box would be controlled by the flying ball of the steam engine governor, and when the steam pressure dropped and the flying ball was retracted, the flap would be opened to allow the firewood in the crate to roll into the furnace, but in this way the governor would have to be very large, otherwise the weight of the flying ball would not be able to drive the valve. Roland thought about it and decided to give up, the wooden box was filled with firewood at most once, and it had to be filled manually after it was used up, so it was better to arrange people to fill the water tank regularly every day.

The final step is to install the water pipes into the home – including the installation of faucets, showers, pipes and the corresponding drains.

Since the castle is not like the newly built brick houses in the community, these holes remain, and the stone ceiling and walls make it very troublesome to renovate, this step took nearly a week, and for the sake of a good and happy life, Roland personally directed Carl to transform a room on the second and third floors into a bathroom.

Once again, Zoroya's new abilities played a key role, as the floor of the drain was painted with cement and then painted with a thin layer of grass that not only served as waterproof, but also made it feel like walking on the prairie when you walked into the bathroom. Inspired by this, Roland simply asked her to paint the whole room. The canopy is open with blue sky and clouds, the four walls can see the valley and greenery in the distance, and the four walls of the bathtub are crystal clear like jewels.

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

The backyard tank was already full of water, and he turned on the faucet and the water gushed down the pipe.

"From this day on, you don't have to bring water from the well," Roland proudly declared, "and the bath water doesn't have to be returned every three days, just stand under the shower and flip the switch." ”

"Huh, where did the water come from?" said Lightning, sticking out his tongue and licking the endless stream of water, "It's sweet." ”

Maisie stuck her head out from under the lightning and did so, "Quite sweet goo!"

Roland pressed the third Nanava, who wanted to lean his head over, "Anyone who wants to drink water must be boiled before drinking, and the water that flows from here can only be used for washing hands and bathing." ”

"It's ...... Siphon principle, right?" Anna looked at Roland, her lake-blue eyes sparkling.

"What's that?" asked the hummingbird with a raised hand.

Under the training of the book teacher, the witches in the class have now developed the habit of raising their hands to ask questions.

"Elementary Physics" says that when the liquid level of two containers is different, the two liquids are connected with a tube, no matter what shape the tube is, under the action of gravity of the liquid itself, there is always a tendency to keep the liquid level flat. "We were at a lower position than the water tower, so the water would be constantly flowing here. ”

"Exactly," Roland praised. He is a genius who can connect what he has learned with reality.

"And what about this?" said the nightingale curiously, pointing to the shower hanging high above, "why does it have so many small holes at the bottom?"

Roland turned the valve open, allowing tiny droplets of water to spray out, "To make it easier to take a bath." As long as you stand under the shower, you can easily wash your body. ”

"So, you've been tossing around the castle for a week just to be more comfortable in the bath?" Lily pursed her lips and whispered, "worthy of a nobleman who likes to enjoy luxury." ”

"Lily!" Shujuan said with a frown.

"It's okay," Roland waved his hand, indicating that he didn't mind, "the pursuit of enjoyment is one of the sources of human progress, and I am certainly no exception. (To be continued.) )