Two years ago, on December 24, 2121, Su Yu launched the "Kechi 143" type unmanned spaceship to search for survivors in the universe.
The unmanned spaceship traveled sequentially to the Moon, Mars, Neptune, and the asteroid belt, finally leaving the solar system to search for the spaceship where Lin Ke and Zhong Feng were located.
After a two-year journey, the unmanned spaceship brought back all the survivors from the solar system, with Zhong Feng and his crew being the last batch.
Fortunately, the spaceship Zhong Feng and his team were on hadn't traveled far out of the solar system.
As they just exited the solar system, Lin Ke and his team chose not to head to a nearby star but waited at the edge of the solar system.
They knew the Dark Energy Rebel Army would leave, and it was more reliable to return to Blue Star after they left than to head for a nearby star.