I've Traveled Through Time, and I Turned It over to the Country

There is really no one, let me try the water.

I read a book that said that the protagonist has the ability to travel to the future, and then goes to the future world to pick up garbage and exchange it for money, and also takes present items to sell in the future world... After reading a few chapters, I felt that my IQ has really increased. There is also a book that says that the protagonist opened a shop in the city, which can receive people from other worlds and the future. Others can practice and travel through various time and space. Then he saw the end of this world, and then the protagonist took the best characters from various worlds to the future to save the world and capture the culprit... After reading it, I learned a big move called "take off your pants and fart"...