From the Start, I Sold Chongzhen 100 Automatic Rifles

Li Si runs a factory in a small country in Black Africa. By chance, he binds to a trans-temporal trading System that lets him trade with beings from different eras and worlds.

From the start, he trades with Chongzhen, the last emperor of the Ming Dynasty, selling him 100 AK-47s and saving the Ming from disaster.

After that, Li Si's trading level keeps rising, and the worlds he trades with grow ever more complicated.

There's a magical world with a school called Hogwarts.

There's a post-apocalyptic wasteland where a beacon lights the way to humanity's last hope.

There's a world of Devil Fruits, where pirates and the Navy fight to the death.

Gradually, after more and more trades, Li Si suddenly realizes that... somehow, without even noticing, he's become invincible.

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.