Mi Li and a group of people who were supposed to have died are chosen by a natural-disaster survival game. The only way to escape the game and come back to life is to work hard to clear it.
Unlike everyone else, Mi Li got pulled into the game by accident. She also has a Building System, something no one else has.
Once she figures that out, Mi Li has nothing to fear about the worlds ahead. Clearing each one is a breeze.
World One: Survive in the wilderness for three months. While everyone else suffers through hunger, cold, and constant threats from wild animals, Mi Li uses her building game to grow crops, build a house, and raise animals. She thrives and stocks up on plenty of supplies.
World Two: A flood descends upon the world. While everyone else frets over how to find a boat, Mi Li builds one herself and sails around in style. Anyone who wants to come aboard just has to pay enough gold and jewels.
World Three: Food and water are scarce in the desert. With her unlimited supply of water, Mi Li sells water and food and earns a fortune in gold and jewels.
After that, a saying begins to spread among the people in the survival game: If you see a woman selling food and water, don't hesitate. Follow her right away. As long as you have money, you'll clear this round without a hitch.
The order of the worlds isn't set yet. I'll write them as inspiration strikes.
Theme: Don't fear hardship. Face it bravely.