Trading the Heavens: Starting from the World of Martial Arts

Meng An, a small gang leader who traveled through the martial arts world, said that he didn't feel well.

Because there is no court in this world, no unified organization, it is a chaotic world where rules and morals depend entirely on self-awareness and luck!

In such a world, Meng An's first thought was to find a stable place to live.

But he didn't expect that after his eighteenth birthday, he would have his own golden finger, a special space that could allow him to trade with all the heavens and worlds!

So... exchange genetic potions with the wasteland world, get some modern technology from the modern world, play arms business with the demon hunting world, get some protective magic weapons from the strange world... As Meng An's transactions became more and more frequent, he suddenly discovered something.

Huh?

How did I become the best in the world?