Time and Space Trading: I exchange a bottle of water for nuclear fusion

【Time and Space Trading】【Shenhao】【Technology】【Broken】
"The overtime trading platform recruits Blue Star agents, with a basic salary of [-] yuan."
Su Yu, who had just lost his job, came across such a job advertisement by accident, and clicked in with the mentality of looking for fun.
Then, he became the Blue Star agent of the hyperspace trading platform, able to communicate with people from different time and space.
Can a ton of rice be exchanged for 50kg of gold with a trade partner in Wasteland World?Ten tons of self-heating rice for an electromagnetic rifle?
It doesn't matter!
A full set of nuclear fusion technology, a thousand tons of grain!
The blueprint of the starship only needs [-] tons of food!
However, this was just the beginning. As Su Yu matched more and more trading partners, the items he traded gradually exceeded the concept of technology.
A penicillin in exchange for the world's unique martial arts "Yi Jin Jing"!
A cannon, in exchange for the longevity elixir of the fairy world!
As the business grew bigger and bigger, the company founded by Su Yu has unknowingly become a super giant with both black technology and metaphysics, and its business has reached a different world!
"Technology sanction me? Come, look at the Star Destroyer behind me, and reorganize the language."