Hand over the Time-Space Trading System at the Beginning

After obtaining the plane trading system, you can trade with the heavens. The higher the level, the higher the level of world you can trade. In order to upgrade as soon as possible, Jiang Chen decided to hand over the system and cooperate with the country to trade with the heavens. What, controlled nuclear fusion technology only requires 10,000 cans? ? What, ten thousand tons of iron ore only require a hundred rifles? ? By the way, what else is there, an aircraft engine? ? Precision machine tools? Lithography machine? ? Huge deals were being concluded one after another quickly, and Jiang Chen's trading level was also rising at a terrifying speed. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.