(Happy May Day!) The hands are shaking, and the batch refinement is deleted, forgive me. The recommendation is a little less, and friends who are free to throw one away, I am not very grateful. ）

Saturdays and Sundays, the only days when Fang Shi can squeeze out free time, it is not surprising that he will finish all the work of the week on Saturdays, even if it is busy until late at night. And Sunday is his free time, in which the combat simulation room is his go-to place, sometimes even a whole day, for the improvement of the level of machine control, he still has extremely fanatical enthusiasm. Of course, in addition to the machine combat simulation, he also has a lot of other activities, such as going to the mall to buy some daily necessities, and then learning from Bai Fei and other military men, and rubbing a very good meal by the way, he doesn't know how many meals he has rubbed now, he only knows that he has only invited once, that is, the time when he lost to Bai Fei, and ate him nearly two thousand star Luo coins in one meal, which is also one of the reasons why he didn't dare to release water again.

The night is like water, flowing slowly. Fang Shi felt that he was in a very good state today, and he had completed the rest of the week's work before eight o'clock, and at this time he had the leisure time to quietly admire the seventh-generation mecha in the center that might be about to be completed. After nearly five years of research and development by Huang Shujian, this quasi-seventh-generation mecha has completed most of the design, and the rest should be completed within a year, and then it can be put into the stars for various actual data tests, if everything goes well, it is estimated that within three years, it will be possible to show its graceful posture on the front line of the Eastern Region of the Empire. This is the dream of the old man Huang Shujian, who once spent nearly ten years completing the first milestone sixth-generation mecha in the empire, and now he wants the afterglow of life to bloom again as a mecha designer.

Fang Shi respects this old man from the bottom of his heart, not only because of the intimate relationship between the teacher and the student, but also because of the old man's stubbornness and persistence......

R&D Lab No. 2 seemed to be exceptionally quiet, and only a daze figure remained.

Half an hour later, Fang Shi stretched his waist and slowly walked to the mecha in the center of the hall, and then directly entered the control cabin, inserting the silver machine card directly into the card slot. The light screen in front of her soon lit up, revealing a little girl with long silver hair at the age of eleven or twelve, with a beautiful face and big black eyes, extremely cute.

Looking at the little girl in the light screen, Fang Shi's mind was filled with a thin figure with pigtails, and his younger sister who had been separated for nearly five years. It's my sister's birthday in a few days, and I'm fifteen years old, so I'm supposed to be a big girl. However, since his sister left K3 Mine, he has not heard from her, and when he thinks of the thin and thin figure crying and swelling his eyes desperately shouting at him when he leaves, he always has an inexplicable pain in his heart, like being pierced into a thorn, and he can't pull it out. He has no ability to find it on the K3 mining star, and now he is naturally looking for it when he arrives at the Snow Flower Company, as early as more than a year ago, he entrusted a detective agency in H3 through the Internet to find it on his behalf, but unfortunately he has not found useful value information until now, and in the depths of his nervous heart, he can only pray for her silently.

"Brother, what's wrong? You don't seem happy. Nana blinked her big black eyes, looked at the ashlar wrapped in a faint sadness, and said with some concern.

Fang Shi came back to his senses slightly, took a light breath, barely controlled the emotions surging in his heart, and then showed a bitter smile and said softly: "Nana, I'm fine." ”

Nana in the light screen frowned slightly, and said, "But why is your smile more ugly than crying?" ”

Nana was questioning, although her emotional intelligence was still only at the level of eleven or twelve, Fang Shi's obvious emotions still couldn't escape her eyes.

Fang Shi looked at the lovely Nana, and smiled bitterly in his heart, although Nana was just a mechanical life without any heat, but for more than a year, he subconsciously regarded her as the epitome of his sister, liked her naughtiness, liked her willfulness, and liked her care......

After a few breaths of silence, Fang Shi said in a calm tone, "I just remembered some of the past. ”

"The past?" Nana muttered a small mouth, revealing a thoughtful look, paused for a few seconds, and asked with a little curiosity, "Brother, can I listen?" ”

Fang Shi hesitated slightly, but quickly nodded, he has always hidden the pictures in his memory deep in his heart, he rarely tells it, in addition to himself, it is estimated that only Yu Le knows a little bit about this world, maybe there is one more person who knows it now.

"Then let me tell you a story, once upon a time there was a family of four, father, mother, brother and sister, and they lived happily together. Dad was a miner, he worked very hard, he didn't come home until late every day, he was tired but always smiling, he liked to tell his children funny stories, they were not vivid, in fact, they were brought from storybooks, sometimes halfway through the storybook, even he forgot about himself, he would pick up the storybook and read it to the children......"

The story is very long, Fang Shi has only told half of it for nearly two hours, and the pictures in those memories are warm and happy, comforting his desolate heart. In his heart, this story has not yet ended, the ending is in his hands, and he needs to create it.

Nana listened carefully, and when she saw Fang Shi stop, she hurriedly asked, "What happened later?" ”

Fang Shi smiled and replied, "I'll talk about it later, it's not too early today." ”

Nana showed a little disappointment, but she didn't force Fang Shi to continue, but just nodded obediently and said, "That family is really happy, with a loving father, a warm mother, a lovely sister, and an older brother. ”

"Happiness?" Fang Shi smiled with relief and asked, "Does Nana know what happiness means?" ”

Nana replied, "Sister Xana said that happiness is a smile, as bright as the sun. The elder brother smiled, so they were happy. ”

Fang Shi hummed softly, a slight warmth in his heart, Nana's answer was simple, but very appropriate.

Happiness is a smile, as bright as the sun!

Nana answered, but a look of worry flashed across her face.

Fang Shi's mind moved slightly, and he guessed the reason, and asked softly, "What's wrong?" Nana, miss Sister Shana? ”

Nana nodded slightly.

"Don't worry, if you have a chance, my brother will help you find Sister Xana." Fang Shi is serious, after nearly two years of contact, he still knows Nana, Shana is like an indispensable part of her life, although he doesn't know why a mechanical life has such a strong dependence on a human, but he is willing to help Nana fulfill his wishes, maybe just because she is the epitome of his sister.

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