Standing on the top of the mountain for a while, one person ate the moon cakes, and after watching the moon for a while, my sister cried and fell asleep and wanted to go home.

Since she wants to go back, then go back. Anyway, my mother and I definitely have no opinion.

As soon as we left, someone immediately took our place, and there were still a lot of people on the small square at the top of the mountain.

Following the way we came, we walked back slowly, chatted while walking, and soon reached the parking lot at the foot of the mountain.

"It's coming so soon!" My sister looked at me in surprise, "Why does it feel like going down the mountain is so much faster than going up the mountain?"

"It's normal. Many times we have the illusion that we will come back much faster than we left."

"Why is there such an illusion?"

Sister is like a hundred thousand whys, and she has to ask everything clearly.

I looked at her speechlessly.

"Because...the theory of relativity!"

My words made my sister couldn't help but chuckle, "What does this have to do with the theory of relativity!"

"Why doesn't it matter!" I looked at her resolutely, "Have you heard a story, a little story about Einstein's explanation of the theory of relativity."

"Are you talking about that summer by the fire and winter by the fire?"

"Well..." I thought for a while, "Probably about the same!"

"Okay, don't worry about the theory of relativity, it's paradoxical, get in the car!"

Mom sat in the driver's seat, stuck her head out and urged my sister and I who were standing beside the car.

I smiled and stretched out my hand on my sister's jade back, begging for a gentle push, "Get in the car!"

My sister opened the car door, I followed behind my sister, got into the car, fastened my seat belt, and my mother drove the car on the road.

Looking at the vehicles coming and going outside the window, the various neon advertisements hanging on the high-rise buildings together constitute the bustling lights of the city.

My sister rested her head lightly on my shoulder, squinting her eyes slightly,

"younger brother!"

Her voice softly called to me.

"Um!"

I answered her softly.

"I think you should learn to drive quickly so you can help mom!"

"Then I'll test my driver's license when I come back from winter vacation!" I turned to look at my sister and whispered.

"It's long overdue!" Mom couldn't help but take my words, "When you get your driver's license, I'll buy you a car, how about it!"

"What am I doing with the car?" I couldn't help but chuckle.

"When the time comes, I will drive out with Wu Lingfeng, Liu Xinyue, and the others. Didn't you tell me during the summer vacation that they all bought cars?"

When I looked at the natural expression on my mother's face in the mirror, I suddenly felt warm in my heart.

As he said to my biological parents, she never thought she had wronged me because she was always trying to give me the best standard of living she could.

In fact, she gave me a sister, which made me very satisfied. For me, the others are really dispensable.

"When the time comes to go out to play, can I just take their car, why should one person drive a car to increase the traffic pressure!"

I declined my mother's proposal half-jokingly.

"But……"

"Don't worry!" I interrupted my mother, "True friends, there is no comparison. If we have to compare in every aspect, I will not become friends with them. Besides, if we really want to compare, let's Can your family compare to Wu Lingfeng?"

Um... Mom has nothing to say.

My mother is very clear about the situation of Wu Lingfeng and Liu Xinyue. If you compare it with Liu Xinyue's family situation, my mother still has some confidence, but when she thinks of the Wu family that runs a private chain hospital, she seems to lack confidence.

"Well, since you don't want it, I just saved the money."

"Don't, Mom, buy me a car!" At this time, my sister suddenly jumped out and shouted, "When my brother taught me to drive, buy me a car!"

"What are you doing with the car?" Mom smiled angrily, then slowly parked the car at the traffic light intersection, turned her head and gave her sister a blank look, "Don't buy it!"

"It's not fair!" My sister hugged my arm in dissatisfaction and shouted loudly thinking of my mother, "Am I your biological daughter?"

"It's unfair to me, if you don't believe me, you will run away from home!" Through the front mirror, I saw my mother's fearless expression, "Besides, whoever told you that you were my own, you were just me back then. It was delivered when the phone bill was charged."

"I paid for the phone bill!"

My sister looked at my mother angrily. After staring at her for a while, she realized she had no choice but to throw herself into my arms and seek comfort.

This is just a daily bickering. I just sit next to me with a smile. The most important thing is to protect myself.

Because of the bickering between my sister and my mother, I felt a reassuring warmth in the carriage.

The car drove for half an hour, and we arrived at the gate of the community. After verifying our identity in the security room, the roadblock was lifted.

After my mother parked the car in the parking lot downstairs in the community, our family of three took the elevator back home.

He turned on the light, changed his slippers at the entrance, and walked into the house.

Familiar environment, familiar taste, this should be my home, I can think of every detail of it with my eyes closed.

One corner of the marble slab in the kitchen was chopped up by my sister with a kitchen knife, and on the solid wood table in the living room, there is still the mark of my sister playing with the blade when she was in elementary school.

Then there is the photo wall behind the wall-mounted TV. The photos that recorded me and my sister from childhood to adulthood, all point to an answer - I grew up here, and this is my home.

"Brother, help me put the power plug in!"

My sister took off her shoes and wore a pair of pink socks. Sitting on the sofa, she shook her calf. She held the remote control and shook it at me.

I plugged in the TV, and at this moment, my mother came over with a cup of hot water and sat beside my sister.

"Thank you mom!"

My sister threw the remote control away, and 'brazenly' leaned over to my mother's side, stretched out her hand to pick up the water glass that my mother was holding.

The mother turned her body sideways and avoided the little hand extended by her sister,

"Go, go, drink and pour yourself out!"

"Brother!"

Being rejected by my mother, my sister started calling my name again with a "wronged" face.

I'm really speechless, this guy is really getting lazy.

It just so happened that I was a little thirsty anyway, so after answering "I know" rather helplessly, I took two glasses and walked to the water dispenser.

After receiving the water, I walked to my sister's side with the water glass in my hand, sat down and handed the quilt in my hand to her.

"Take it!"

"Mmmm!" My sister happily put the remote control on her lap, then stretched out her hands, held the water glass, put it to her mouth and took a sip, "Wow, it's so comfortable, it's my brother who hurts me the most. La."