The Time-Turner was one such example. In her third year, Hermione had used it to attend several classes with conflicting schedules, and had even used it to travel back in time with Harry and rescue Sirius.
But the Time-Turner reversed time, taking its user straight back into the past, whereas this painting of Helga's slowed the flow of time.
The ability to control time was a divine law even in the world of cultivation.
Yet this painting actually had that function too. Although it only slowed time to a third of its normal speed, that was still incredibly overpowered.
Looks like I'll have to cultivate here often from now on and cheat just a little.
After all, a little cheating didn't count as cheating. Whether he succeeded still depended entirely on whether he worked hard enough.