I'm Picking up Rags in Another World

What is the most expensive thing in this world? Gold? Silver? Home appliances? Jewelry? Clothing? House? But these are all unnecessary rags in the last days. So what is most important in the last days? Alive, alive, still alive. Eat, eat, eat. If you can't survive anymore, why do you need all this, right? And Ji Xiaomu can travel between two worlds, pick up rags in the apocalypse, and get money in this world... Poor Ji Xiaomu said that if you have money, you are a master...