The Days I Spent Trading Between Two Worlds

Also known as "How I Made My Fortune as a Middleman."

During a mech exercise, Bai Xicheng accidentally transmigrates from the 31st century back to 21st-century Huaxia. With the help of the System, he can travel freely between the two worlds.

The 21st century has resources but slow technological development, while the 31st century has advanced technology but lacks basic supplies. Food and fruit are expensive, so if he seizes this business opportunity, getting rich and reaching the top of the world should be just around the corner!

21st century:

Short on minerals? The abandoned planets of the 31st century are there for the taking.

Short on weapons? Take your pick of laser swords and mechs.

31st century:

Short on fresh fruit and vegetables? I'll ship over tons of them.

Lost historical records? Stack up the documents and ancient books! ...

Both eras undergo earth-shaking changes because of one butterfly flapping its wings, and develop toward a stronger, happier future.

Gentle gong X prickly shou (probably~)

The gong is gentle on the inside, not the soft-spoken type.

Reader's guide:

1. This is pure feel-good wish fulfillment. Logic is dead, so don't nitpick. Sci-fi is for wild flights of imagination. Don't overthink it; just enjoy the ride.

2. There is a CP, but the main focus is career. Romance is limited, and this is not a stock-picking romance.

3. My writing is limited, so please go easy on me.

Theme: Resources and technology working together to drive progress