Qin Fengming sat cross-legged on the stone bed, forming hand seals with both hands and releasing his divine sense as he slowly began sensing the various rune patterns moving across the cave walls.
He could be certain that if there truly were restrictions on these stone walls beyond his ability to investigate, then with the help of these rune patterns, he would naturally be able to detect even more powerful hidden restrictions.
Time slowly passed, and Qin Fengming's expression gradually grew solemn.
Although this cave was vast, there truly were no hidden stone doors or restrictions on its walls or ceiling.
After half an hour, Qin Fengming put away his hand seals with a gloomy expression.
By now, he could be certain that there were no restrictions here.
However, just as Qin Fengming put away his hand seals and planned to rise and leave this ancient cultivator's Cave Abode, a faint "Crack!" suddenly rang out from the stone bed beneath him.
The sound was exceedingly faint; describing it as barely audible would not be an exaggeration.
Yet the instant the sound arose, Qin Fengming had already sprung to his feet and shot away from the stone bed. His reaction was as swift as lightning striking flint.
However, even with such a rapid reaction, he had only just left the stone bed when he was swept into it by a powerful pulling force that surged up from beneath him.
That immense force was swift and terrifying. As it swept around Qin Fengming's body, it directly dragged him back down onto the stone bed.
Just as Qin Fengming was being swept up by that surging force, the broad stone bed suddenly sank and began plunging rapidly downward.
As the stone bed descended, Qin Fengming was likewise dragged down by the powerful force.