Future Trading: Handing Over a Billion Tons of Oil from the Start

"Jack the Rogue: Selling an interdimensional tech gun (fires special bullets with six attributes: wind, lightning, water, fire, light, and darkness, and comes with auto-targeting). Price: one bag of shrimp crackers."

"Lily the Enforcer: Selling atomic-powered running shoes (enhance the wearer's leg motor nerves, giving ordinary people an athletic experience on par with a world champion). Price: one jar of Lao Gan Ma."

"Cyber Hacker X: Selling Skyshield anti-hacking software (a civilian security program from a thousand years in the future, powerful enough to make any hacker who breaks into your computer suffer). Price: one bottle of fresh milk."

Lin Yu activates the Future Trading System,

then trades nothing but air for an oil detector,

helping the country discover an oil field with a billion tons of reserves!

Whatever the country needs, I've got it.

Don't ask. The answer is that I love my country!