The airship stopped at the entrance to Platform 30, from where the Lucy family passed through a metal arch of security and entered the boarding tunnel leading to Platform 30.

In the boarding passage, everyone is not only like being in a time and space tunnel, but also like being in the sea of stars in the universe. Looking around, spiral-shaped galaxies rushed to the surface and flew away. From time to time, there was a glimmer of light in the darkness, which was the dazzling light of a gloomy star such as a supernova hidden in the depths of the universe when it exploded. If it weren't for the gravity under her feet, Lucy would have wondered if she was still above the surface, as if she had been immersed in eternal time and space.

Out of the passage is the No. 30 sub-platform. Under the reflection of the blue-purple halo at the top of the platform's arch, the entire sub-platform is like another space-time tunnel leading to the more distant deep space of the universe. Here, a platinum-gold streamlined space train is waiting for passengers in a tunnel. Although it hasn't started yet, it feels like it's ready to take to the skies.

Lucy's family boarded the space train with the flow of people, and there was no overt illumination equipment in the carriage, but a faint orange halo appeared, which seemed soft and warm. There is a row of seats on each side of the aisle. In order to ensure that each seat has enough room to move around, the distance between the seats is 2 meters.

Lucy found her seat. As soon as her body touched the seat, the shape, flexibility, and temperature of the seat immediately changed, so that the passenger's body indicators reached the most ideal and comfortable state. Lucy lay down and stretched, letting the fatigue of the trip disappear. Owen and Kate also lay down in her front and back seats, respectively.

Lucy looked around, stopping at another family approaching her. The family was also made up of a pair of parents with a girl in her teens. The parents have gray pupils and are tall and lean with brown skin. The appearance of the child is similar to that of the parents, only because of the young age and the relatively small stature. At first glance, they let people know that they are the descendants of early Martian immigrants, and now they are standard Martians.

The girl walked to the seat opposite Lucy and stopped, and as she was about to sit down, she seemed to notice the look that Lucy had cast, so she turned around generously, smiled at Lucy, and nodded.

Seeing that the other party took the initiative to greet her, the corners of Lucy's mouth rose and she also responded with a greeting: "Hello! ”

After the girl sat down, she took out a small black square with a size of 2 cubic centimeters from her pocket, and clicked on it with her finger, and a 10 x 10 centimeter square light curtain was immediately generated above the small square, and there were several circular aperture patterns of different colors and labels on the light curtain. The girl clicked on one of the green circles, and the small square instantly expanded into a 20x80x50 cm carry-on locker.

The girl opened the cupboard, took out two bottles of drink, and handed one to Lucy: "Taste it, it tastes good", and then she added: "This drink is only produced on Earth, and every time I come to Earth, I have to bring some back to Mars." The girl gestured to the carry-on locker filled with the drink.

"My name is Lucy, thank you!" Lucy thanked her, took the drink, and looked at it curiously. The raw material for the production of the product shown by the cursor above turned out to be a flower grown in the Amazon of South America. In the hundreds of years since human settlements on Mars, the Martian environment has gradually become suitable for human survival through long-term environmental modification projects. But this flower has very strict requirements for the living environment, so that the Martian environment has not been able to meet the survival requirements of this flower until now.