The System Only Chooses Me, but the Whole Family Is Awakened

[System + Urban Power + Family Growth + Dungeon Competition + Single Female Protagonist] Shenzhen programmer Jian Bei's biggest wish is to buy a house in a school district before her daughter goes to school; her biggest fantasy is to be a superhero who saves the world while on the road after get off work. In a mountaineering accident, in order to protect his wife and daughter, Jian Bei was on the verge of death and was selected by the mysterious system. The system was originally only prepared to save him, but he forcibly gave the opportunity to his wife and daughter. Since then, Jian Bei has received a mechanical left arm that cannot be analyzed by modern technology; his wife Liu Xuan has a mysterious vehicle that can change and fold space; and within the body of his four-year-old daughter Yan Jian, there lives an ancient guardian who has lost his memory and only appears at the moment of life and death. The family of three thought that it would be over if they returned home alive. It wasn't until the mission came that they discovered from clues: the system had been running for ten years, and there were already capable people and powerful teams in reality. There are many restrictions on real-life tasks, and life or death in dungeon tasks is unpredictable. Points will be deducted if you fail, and if you don't have enough points, you will be directly wiped out. And when the fallen worlds began to merge into the earth one after another, and elves, monsters, mythical beasts and abyss descended one after another, Jian Bei also gradually discovered that the mechanical technology in his hands might just be the most inconspicuous shell of some mythical power. But before saving the world, the couple must first explain to the company: Why do they always take the same day off lately.