Swapping Instant Noodles for Ore: Ten Boxes of Master Kong for Ten Tons of Rhenium?

[Three Realms · Interstellar Trade · Exchange Pandas for Nuclear Fusion] Ji Chunhui's QQ has been a bit busy recently. Left window, Liu Qiyun in the post-apocalyptic world: "Brother, we have finished eating the instant noodles again! We just dug 500 tons of rare earth, can we replace it with a self-heating hot pot? There are a lot of zombies outside the wall, we need to hurry up." In the right window, Level 3 civilization Jing Changyuan: "You are still burning coal to generate electricity? Our nuclear fusion has been obsolete for 30 years... By the way, are your giant pandas on Earth still panting? The last living thing in our universe is a mechanical dog. I want to see it alive." Ji Chunhui looked at these two friends with very different painting styles and realized. ——It turns out that I am the middleman. He sent Liu Qiyun instant noodles and ham sausages in exchange for mountains of rhenium ore, gold, and rare earths, and asked Longguo's military industry to hold a meeting overnight to give him an S-level confidentiality label; He sent Siberian tigers, giant pandas, and crested ibises to Jing Changyuan in exchange for "obsolete versions" of controllable nuclear fusion reactors, laser cannon blueprints, and anti-gravity airships. When the academician of the Academy of Sciences took apart the "obsolete equipment", his hands were shaking so much that he could not even hold the tea cup steady: "This... This is three hundred years ahead of us!" When the Dragon Kingdom fighter jets are replaced with infinite energy cores, when the aircraft carrier does not need to be refueled for three years, when the laser skynet burns enemy missiles to ashes—— Ji Chunhui was sitting by the open-air swimming pool of a 600-square-meter mansion and sent a message to Jing Changyuan: "Dear, what do you want to see for your next order? Golden monkey or alligator? Free shipping and comes with hot pot base." Jing Changyuan replied instantly: "Can... Can you see a live cockroach? We only have fossils in the museum." Ji Chunhui: "??? Is this the taste of your third-level civilization?"