The Heavens' Time and Space Dice: Bound to the Six Realms from the Start

Yanni was all set to look after her little convenience store, live off the income, and eat, drink, and wait for death. Then she discovered that the dice she'd been playing with for over a decade were a treasure. They could link six different worlds, letting her transmigrate between them and seize opportunities within each world to earn rewards and grow stronger.

Then her journey began. She even opened shops in these worlds, selling goods from one world in another. She was a greedy merchant on one hand and snatched opportunities on the other. (Note: This novel has no male lead.)