I Can Make Deals with the Past and the Future

No one in the world can make a thousand-fold profit. But Ji Chen, who has a "universal trading system", can do it easily. When the transaction conditions are met, a bottle of water and a loaf of bread can be worth tens of thousands of gold. Trade with the past to obtain gold, century-old ginseng and various precious medicinal materials. And future transactions to obtain various high-tech products. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.