Early that morning, while Lucy was still asleep, she was awakened by a pleasant female voice: "Dear Lucy, it's time to get up." Today is the day you bid farewell to your grandfather, don't delay."

Lucy opened her hazy eyes, and a slim girl leaned over the bed, gently stroked her forehead, and looked at her with a smile. The girl is Denise, a humanoid artificial intelligence lifeform - except that the internal structure of the body is artificial, its appearance, thoughts, language, behavior and performance are indistinguishable from ordinary humans.

According to the Artificial Intelligence Civil Rights Act jointly promulgated by the federations of the solar system, AI lifeforms with an intelligence level of E (the intelligence level of ordinary people) and above have the same citizenship status as ordinary humans and enjoy the right to freely choose their way of life and work. Denise was born in the Artificial Intelligence Lifeform Cultivation Base, and her intelligence level reached E+, so she obtained citizenship.

The Federation of Planets has provided employment services for AI citizens. For example, the Earth Federation has designed an artificial intelligence citizen job matching system that allows artificial intelligence to search for jobs that interest or suit them, and Denise is one of the many beneficiaries.

After Denise was born, she began to search for job opportunities. She chose from the many job opportunities available under the system to become a housekeeper for Lucy's family. For her first job, Denise initially had the mindset of giving it a try. Unexpectedly, when Lucy met Denise for the first time at home, the two were attracted to each other and gradually became sisters in their common life. Denise has since stayed and become an official member of Lucy's family.

Lucy quickly got up, washed up, and had breakfast, and then took the anti-gravity saucer air express with her dad Owen and mom Kate to the air-ground integrated vertical rail transit center in the center of the city. There, Lucy's family will board the "space train" to the spaceport on Space City 1, which is located in geosynchronous orbit.

The Sky Express travels through a forest of buildings of various shapes. Lucy looked out of the porthole and saw a ball of light shining like a small sun in the middle of the city, providing clean and efficient energy for the city. And the energy of the small ball of light comes from the "Dyson sphere". The energy emitted by the sun has been shielded and absorbed by the "Dyson sphere" and replaced by tens of thousands of "little suns" distributed around the world. The city is made up of a variety of huge saucer-shaped buildings and tower-like buildings that shimmer in blue and purple under the illumination of the ball of light. Various traffic tracks crisscross the air, and countless aircraft shuttle through them.

"Dad, Mom..." Lucy turned around, snuggled in her mother's arms, and pulled out Jiao: "When it's a holiday, you can take me to see grandpa!" Mom was stunned for a moment, looked at the little guy's eyes full of expectation, and softly comforted: "Grandpa went to a very far place, there are many tasks to complete, and after a while, grandpa builds a new home there, let's go visit grandpa again, okay?" ”

"Oh—" Lucy looked slightly disappointed. She has been close to her grandfather since she was a child, and she can't bear to live without her grandfather by her side.

"Okay, mom takes you to the interstellar communication center once a week for you to 'meet' grandpa." Mom comforted her.

"Great," Lucy clapped her hands and smiled happily.