I Sold My Graphics Card Back, and the Tech Giants Panicked

[Urban imagination + system + black technology + cross-generational transactions + pretending to be a pig and eating a tiger] A graphics card that was only worth 1,800 yuan now was sold back to the past by Fu Changchen for a transaction price of 9,600 yuan. Those old goods in the warehouse that no one cares about were delivered a few years ago and became hard currency for grabs. Relying on the sudden appearance of the "time difference trading terminal", Fu Changchen received the goods at a low price and resold them at a high price. When his peers lowered prices, he backhandedly ate up their inventory; when channels were blocked, he directly bought warehouses; when technology giants were preparing to release new products, he ate up the entire supply chain in advance. Until one day, he submitted an undisclosed chip to the shelves. System prompts: [Approved. Fu Changchen discovered that as long as the product can be sold back to a certain era, it proves that someone has already created the corresponding technology in that era. Unreleased products, secret prototypes hidden in laboratories, false technical routes deliberately released... No matter how tightly guarded the trump cards of technology giants are, they are all invisible to him. At first, Fu Changchen only wanted to make money with this ability. Later, he bought factories, grabbed orders, and supplemented the supply chain, turning stuck technologies into products that could truly be mass-produced. When those technology giants finally reacted, Fu Changchen had stopped chasing them. He is redefining the rules for the next era.