A millennium into the future, humanity has explored the cosmos, and energy and technology are no longer issues. People in this era, however, have a deep interest in historical items like stamps, antiques, currencies, and paintings. Jiang Fan unexpectedly obtains a trading space, allowing him to trade with humanity from a thousand years in the future. He trades a set of currency for a million barrels of oil. Then, controllable nuclear fusion, advanced chips, lithography machines, and quantum communication all become available. Does he want a Luan bird aerospace carrier and a star destroyer? Absolutely!