I Am the Only One Left in the World!

There is only one person left in the world, Ke Kan. Yesterday my roommate was still asking: "If you were the only one left, what would you do?" Ke Kan said: "Scratch all the lottery tickets in the world." When he woke up today, he was really gone. The lights are on in the mall, there is no message on the phone, and the biggest prize in the scratch lottery is 1,600 yuan. Just when he was cursing, the system came—— [You can only survive if you scrape it off]. Scratch the lottery ticket and get the prize. Scratch the car and get out the parts. Scrape the building and produce building materials. Scratch this empty world... The truth hidden behind the silence was revealed. Ke Kan: "I just want to be a loser, and you want me to bring about a renaissance of civilization?" System: [Ask the host to scrape off the next layer. Later, an alien fleet arrives in the solar system. They saw that the surface of the earth was densely covered with "scratched" shining marks.