Survive the Killing Game in the Apocalypse

[Apocalyptic wasteland + super powers + two heroines + non-biological sister + childhood sweetheart] Five hundred years ago, a swarm of asteroids hit the Earth, completely destroying the original ecological balance. High-intensity cosmic radiation enveloped the earth, giving birth to countless alien and star beasts. Humanity was once on the verge of extinction until it was discovered that the magnetic field and environment around the fallen star core were no different from the old Earth. The survivors scrambled to seize the star core to build a city, built the last shelter in the wasteland, and gradually figured out a way to use the star core energy to awaken human abilities to fight against the invasion of the beast tide. Yang Yunxiao failed to awaken his powers when he was sixteen, but his childhood sweetheart awakened her double powers. Under such a shock, he unilaterally broke up with her. Two years later, when Yang Yunxi was sixteen and had not yet awakened her powers, a horde of beasts besieged the city and she had no choice but to flee. During his escape, his sister was seriously injured while protecting him and had no money for treatment. He had no choice but to participate in the wishing game, only to find out that it was a lie and was actually a killing game. But it was also a blessing in disguise that he had a supernatural power awakened within him. He met his childhood sweetheart Liu Mengran in this star city, and Liu Mengran took them away from here. From then on, his life became unresolved. What does it mean that he dug out the star core of a star city with a Vientiane Sky Guide? Why did he destroy a star city with just one Shinra Tianzheng? What do you mean he made a satellite out of a geoblast star? What does it mean that the satellite he made can follow him?