This plaza was indeed a large cross-boundary teleportation array. However, this enormous array was not activated at the moment. Qin Fengming walked around the plaza once, but discovered no other restrictions.
With Qin Fengming's knowledge, he naturally knew that this array should not pose any danger at present.
However, out of caution, he still decided to start extracting the energy crystals from this enormous array at one location.
Ancestor Daoyan had once said that top-grade Yin Stones existed here. If he was not mistaken, those supreme-grade Yin Stones should be located at several array hubs on the plaza.
Qin Fengming could not be bothered to test their exact locations. If he simply had everyone dig, they would naturally find them.
When they heard Qin Fengming's instructions, everyone immediately grew excited. At the thought that top-grade Yin Stones might exist here, they could barely contain themselves.
Even the two Ghost Kings, Ma Xin and Huang Fenghua, had never seen top-grade Yin Stones before.
Not to mention cultivators of the Ghost Realm—even in the Spirit Realm, while top-grade Spirit Stones existed, top-grade Yin Stones were exceedingly rare.
Everyone answered in agreement and began summoning their magic treasures to dig into the ground. However, Qin Fengming deliberately instructed them to avoid the locations where the statues stood.
The rocks in this valley were extremely tough and should have been transplanted from elsewhere by Ancestor Daoyan when he had set up the array back then. Even though everyone was a Great Cultivator Ghost Lord and used magic treasures to dig, their progress was still not fast.
Fortunately, they did not need to worry about exhausting their magic power, since the rate at which they dug was balanced by the speed at which they absorbed the energy of the Yin Stones to replenish their magic