Trading Between Two Worlds: Trading Bottled Water for Gold from the Start!

Dual World Travel [Ancient Times + Modern City], no angst for the protagonist, all the way to soaring success and pure thrills!

After graduating from college, Shen Yiming was amazed to discover that his security guard uniform could take him to an ancient world!

And this ancient world seemed to be suffering from a famine!

Food and water were incredibly precious!

A bottle of modern mineral water could be traded for gold!

Two cans of modern Eight-Treasure Porridge could be traded for a famous courtesan!

Shen Yiming trades goods between the two worlds, steadily building his wealth and power!

In the modern world, becoming the richest person on Earth in a year. That's not too much to ask, right?

In the ancient world, unifying the globe in two years. That's perfectly reasonable, right?