Global Mutation: My Collection Can Be Upgraded

Overnight, fog enveloped the world, and the familiar world collapsed. Night markets, high-rise buildings, traffic... Everything is thrown into an unknown primitive forest. Cell phones are out of order, civilization is cut off, and ferocious beasts and "monsters" that only appear in legends are wandering in the darkness, hunting bewildered humans. Lu Xun found a bunch of mysterious data in his mind. He soon realized that he had awakened an ability called "collection" - touching objects can convert them into regular "resources" and store them in an ever-expanding space backpack. What's even weirder is that every time you collect it, you can gain experience and level up quickly. And every ten levels, new functions will appear, such as making multi-functional campfires, firearms, construction functions, etc. Let's see how he kills everything in this strange world!