"The night is hidden from the door."

Quietly in the alley, Mu Zi'an and his mother hurriedly walked. The mother and son went one after the other, just as they did when they came.

In the night, there was no sound in the alley except the footsteps of each other. With a "squeak" of the door, the night was hidden from the door.

"Dad", Mu Zi'an ten years ago, looked up at the tall and majestic man beside him with a happy face. At that time, Mu Zi'an's father had just returned from a business trip, and he carefully pulled out a brand-new helicopter from a black handbag printed with "Made in Shanghai".

The helicopter's fuselage is streamlined, red throughout, and the wings have a white line, which is very conspicuous. Under the sun, the helicopter was shining, and Mu Zi'an's eyes were also shining with joy and surprise.

Tighten the clockwork, and the plane was able to fly off the ground.

"Dad, Dad......" Mu Zi'an happily followed behind his father, the hair on his forehead was stuck together because of a little sweat, and his little face was also red.

At that time, Mu Zi'an's parents were still working in the supply and marketing cooperative, and the family house was still an old house with blue bricks and gray tiles, and the yard was also square and small.

In a corner near the east wall, Mu Zi'an's mother planted a circle of thin branches in a small plot of land to plant seasonal vegetables. Every morning, Mu Zi'an would wake up to the sound of his father shaking the water press to get water. With the smell of earth, the vegetables that had slept all night were refreshed.

At that time, the yard was also a rudimentary dirt floor.

On a sunny day, some fine sand will appear in those dirt yards after being trampled on for a long time. In the evening, when he was fine, Mu Zi'an's father would accompany him, squatting in the yard, holding a branch, and drawing various animals on the ground.

"This is a kitten, you see, its whiskers are upturned, as if it is angry......" Mu Zi'an's father, pointing to the cat on the ground, said to Mu Zi'an.

"Do animals get angry too?" Little Mu Zi'an asked in a childish voice.

"Yes, they also have emotions, they can be happy and sad......" The father stroked Mu Zi'an's head and said in an unhurried tone.

When it rains lightly, the smell of earth lingers in your nose as the raindrops fall to the ground. Slowly, the fine dust lay on the ground, and the fine grains of sand slowly converged their temperament, and they were embedded in the soil and disappeared.

After a rain, the yard changed its appearance; After a storm, the world has also changed.

I don't know when it started, Mu Zi'an's father began to get busy. In the evening, Mu Zi'an always sat on the stone bench outside the gate, waiting for him to come home. But his father returned home later and later, and even sometimes, when he came back, Mu Zi'an was already asleep. Even if his father came back early one day, he didn't seem to have the patience to accompany Mu Zi'an to draw in the yard, let alone have the patience to read the comic book to Mu Zi'an.

Many times, Mu Zi'an sat at the gate, craned his neck and looked at the end of the alley, praying inwardly that the familiar figure would suddenly break into the alley and appear in his field of vision.

Waiting is always in vain, and that short alley, to Mu Zi'an, seems to have become endless, endless, as if there is no end.

"Daddy," Mu Zi'an muttered as he woke up.

The lights in the room were on, and the homework book that Mu Zi'an opened was pressed out with some folds. Mu Zi'an reached out and pressed the folds repeatedly, but there was no way to restore the page.

There are some years that we can only look back on; There are some rifts, and we can't get back to the sky.