I Rely on Magic Weapons from Street Stalls to Become the Mastermind Behind the Scenes in the Heavens

The protagonist, Chen Fan, was setting up a street stall and was hit by a cauldron descending from the sky. He could only stay in the cauldron and could not get out. He connected to the world of the heavens by opening a branch market and became the mastermind behind the world of the heavens through transactions.