Sacrifice at the End of the World: Will the System Ask Me to Be a Sacrifice?

One hour before the rebirth and blood sacrifice ceremony, Jiang Chen bound the sacrifice system, only to find that he was the sacrifice. System rules: Sacrifice your loved ones to gain strength, sacrifice your soul to gain eternal life. When the family was parasitized by an alien race, his parents turned into monsters, and his sister was used as a ritual medium, Jiang Chen discovered the loopholes in the system—— He reversely sacrificed the system itself, stole rules and authority, purified the blood energy of the beast race, and devoured the evolution of alien races. Zombie wave? Alien invasion? Higher civilization purification plan? They are just sacrifices for a new round of sacrifices. "This time, I sacrifice to the gods."