This is a true human city, a city of life for the young cleaners.

Tasks are completed here, one by one, and the teenagers are growing up day by day, approaching an adult cleaner. Although that is not everyone's goal here, it is the greatest wish of the Red Moon Organization, and the Red Moon One hopes that they can grow up as soon as possible so that they can serve the organization, and it is not good to blindly invest in things that do not see the harvest.

In one of the rooms closest to the garden, there were several very beautiful butterflies flying outside the window, as if attracted by some kind of soft sound.

If it weren't for those terrible memories and what would eventually happen, everything on Mars would still be quite beautiful, no one can deny that.

Especially on such a sunny afternoon, few people will think of the tense atmosphere of the day at this moment.

Following the light sound of the piano, Xia Chenghao sighed deeply, then pushed open the door and walked into the house.

In the middle of the room was a white and flawless piano, and the sunlight slanted in, scattering a faint layer of yellowish light on the windowsill, and the afterglow was reflected on the surface of the piano.

There is a faint halo flowing on the surface of the white piano wood grain, as if it were a dream. The light and shadow floating in the dreary room in the afternoon gave Xia Chenghao a strong impulse. He could imagine the person playing in that light must be beautiful.

But today's Xia Chenghao guessed wrong, unexpectedly a thin man with gray hair and messy ends sat straight on the piano bench. He played like no one else, and his slender ten fingers fell on the keys like spring rain, which seemed to be completely connected with the keys, and the snow-white skin and white body were unified into a whole.

Hearing someone coming in behind him, he seemed to know that it was Xia Chenghao. After playing a tune, he raised his head slightly, tilted his face, and looked at the few places with those dark blue eyes.

I've been playing for a long time, so I'm familiar with it. Leaving the guidance of the score, he continued a new piece and began to play it. The music grew softer and softer, as if it had melted into the air. In him, there seems to be a taste of detachment from the world, as if he came from a special era, or another very elegant world.

"Want to learn the piano?" The man asked softly.

Xia Chenghao didn't speak, just nodded lightly.

"Come, sit here!" He motioned for Xia Chenghao to sit beside him.

Xia Chenghao behaved a little unnaturally this time, in fact, after so many years of training, he was a little unaccustomed to this kind of warm scene or romantic mood.

"Confused?" The man said lightly.

The boy gave the thin man a strange look, and wondered.

"Everyone knows that this music depends on the state of mind, if you look at your current state of mind, you can only go to a big drum or something!" The thin man said coldly.

Xia Chenghao took a long breath, trying to throw away the chaotic thoughts, and the sound of the piano around him suddenly had a magical change at this moment, feeling like a pair of gentle hands, gently patting his somewhat tired heart, making him slowly calm down.

"How much do you know?" The thin man asked as he played, but he didn't seem to be distracted, just an official conversation.

"I've read some books, but I don't know much about them." Xia Chenghao replied tentatively.

The thin man shook his head, showing a smile of understanding, then raised his eyebrows and continued: "The sound of the piano is the language you speak through your hands, and power is the key.

Xia Chenghao and all the teenagers understand that such a course has its special role, not only to really taste music, but to learn new killing skills.

On the one hand, concerts make people more elegant, so that they can easily approach people and enter certain occasions. On the other hand, people will let their guard down on such people, making the cleaners kill invisibly.

After the man finished speaking, his ten fingers began to jump quickly on the black and white keys again, and the song followed, I didn't expect him to have such a good voice.

Xia Chenghao closed his eyes and enjoyed this short but beautiful time, which was also a long-lost time.

The song quickly became softer, and melted back into the air, as if it were nothing.

At the end of the song, Xia Chenghao opened his eyes.

"Strengthening finger strength with arms, waist and legs is also a process ......of training" The thin man leaned forward, and his ten fingers smashed into the keys like a hammer, and the sound came out like a mountain and a tsunami.

The corners of Xia Chenghao's mouth twitched slightly, and this voice reminded him of the experience of going to sea from the Red Moon Base, the terrible process of fighting the waves, and he was still trembling.

"I don't know what your strength is." The thin man just reached out and removed a board from the piano and handed it to Xia Chenghao, but the other hand was still jumping on the keys, and the music was not interrupted.

"Bounce hard!"

Listening to the tutor's order, Xia Chenghao really played obediently, but he didn't expect the piano board to break in response.

The hands playing the piano on the other side stopped abruptly, obviously frightened by the result.

Xia Chenghao himself was also very surprised, he thought that he would only play out with the same strength as the old man, but he didn't expect the piano board to be broken at this moment. Will I have to pay for it? Obviously, no, everything here is covered by the Red Moon Base, and there will be no compensation for the accidental damage of the students.

More importantly, the young cleaners have nothing to exchange or compensate for.

The thin man paused for a moment, then coughed lightly, obviously a little displeased: "There is a big problem with strength, remember that playing the piano is not breaking bones, there is no need to use so much force." ”

The young Xia Chenghao just nodded quietly, but in fact, he just misunderstood the meaning of the mentor's so-called "force".

"Remember, being noble is also a special skill, and if you're just a guy who can fight and kill, you're never going to win, and you have to keep that in mind, you know?"

Seeing that the boy did not answer, the tutor continued, "It is the same with the qin, and it is the same with everything. To be a person with coarse and fine, thick and fine, you can't blindly think about causing people to die, even if you think like this, don't be too exposed. Communicate and talk well with the piano, know how to confide in it, and definitely not try to conquer them! ”

The thin man raised his hands slightly, and his ten fingers swiped quickly on the two rows of black and white keys again, making a pleasant soft sound, and before the aftermath was gone, a series of beautiful notes floated out of the room.

It is indeed an extremely beautiful melody, Xia Chenghao carefully remembers the angle and position of the man's hands flying on the keys, this kind of thing related to space, time and rhythm, this is not too difficult for him.