The Rune dissipated rapidly the moment it touched his hand, and Logan hastily injected a stream of Spiritual Power to merely delay its vanishing. Naturally, Logan was unwilling to let the rune disappear, as it played an essential role in his research into the Seal.
He then brought out the Qian Kun Bead and entered its small world, where time flowed a hundred times slower. While half a minute in the outside world equaled an hour here, to Logan's surprise, the Rune continued to fade.
At first, he didn't understand, but realized in a moment that what took a minute to vanish outside still took a minute here. If the fading slowed by a hundredfold, then cultivation within the small world would also slow by the same amount. What would be the point of cultivating there? It's the flow of time that's different, not a hundredfold deceleration of time.