The girl shrunk the locker into its original state and put it away. She turned around again and chatted with Lucy: "My name is Leia, and I came to Earth with my parents for the weekend, and I will go back to Mars tonight, otherwise I will delay class on a cloudy day." ”

Lucy smiled: "After a while, you can come to Earth for a long time." ”

"Isn't it, although our family is a real Martian born on Mars, my parents and I still like life on Earth. It's just that their work is on Mars, and we can't do without it, so we have to come and play in our free time. Leia pursed her lips, paused, and said, "I have also made a lot of friends on Earth, and every time I go back to Mars, I am reluctant to let everyone go." ”

"Then the next time you come to Earth, remember to come and play with me. Here is my contact and address. Lucy shook Leia's hand as she spoke.

Both have superchips embedded in their hands. This is a smart terminal device that is very popular in modern society for personal use. It is perfectly integrated with the human body, and the energy used is the bioelectricity of the human body. The size of this personal smart terminal is nanometer-level, extremely small, and after contact with the skin of the body, it can combine with the cells on the surface of the skin on its own. As long as the two parties embed this kind of smart terminal in any part of the body, the information transmission between the smart terminals can be realized through simple contact methods such as shaking hands.

When the two shook hands, the information containing Lucy's personal contact iP and address was transmitted to Leia through the smart terminal in her hand. Because personal smart terminals are so convenient to use and have a huge amount of information storage, they are almost everyone's essential tools for communicating and storing information in today's human world.

"Alright", Lucy nodded, letting go of her hand. Leia tapped lightly on the back of her hand, mapping a 20x20 square centimeter blue light curtain upwards where she clicked. Pink lettering on the light curtain indicates rows of information fields. Leia clicked on the top line of the light screen, and Lucy's contact information and address were immediately displayed.

"I'm so happy to have made another friend. Then we said okay, I'll come to play with you on vacation. Deal! Leia clapped her hands and laughed.

Lucy gestured to Leia with an OK gesture and continued, "I've grown up so big, I went to Mars with my family when I was very young, and I don't remember anything about it now. If I have a chance, I would like to go to Mars to play with you. ”

"Well, I'll be your guide on Mars. Mars is changing with each passing day, and there are still many places worth exploring, let's explore them together! Leia said with a frown.

Lucy raised her hands in approval. "Also," Lucy paused, I want to circumnavigate the solar system and even farther away after graduating from high school, and we can be each other's company if you want. ”

"Yes, no problem," Leia replied enthusiastically.

Just as the two girls were talking happily, there was an announcement in front of the carriage that "the train is about to start, please adjust the seat status to safe mode".

They put the seat in safe mode, the gravitational field of the seat was strengthened, and the safety cover slowly closed from the top of the seat. After a while, Lucy felt a slight tremor as the space train started under the combined action of electromagnetic fields and anti-gravity... Exit the top of the pyramid and accelerate until it flies like a bullet in a closed orbit at a speed of 20,000 km/h.

There are hundreds of space trains running between the space-ground integrated rail transit center and the No. 1 spaceport every day, and each train "travels" in an independent closed track after leaving its own sub-platform, without affecting each other. Although the space train "lifts off" perpendicular to the ground, under the effect of artificial gravity, the feeling of passengers in the train is no different from riding on ground transportation.