Back in the Iron Sky Kingdom
Although the hole in question was not located directly in front of them and was on the opposite side of the Iron Sky Kingdom where the core region of the Sky Empire began, it was not hard to spot when their divine sense swept over the Iron Sky Kingdom.
"Did an underground cave collapse?"
As her divine sense swept over the enormous hole in the ground that had ended up forming a natural barrier between her kingdom and the core region of the Sky Empire, Yi Min could not help wondering out loud about what had happened.
Even though a large number of Core Formation Realm Experts had ended up dying when falling into the collapsed cavern, Yi Min didn't see any of them through her divine sense due to focusing most of her attention on the formation towers located close to the hole. Making sure that none of them had been damaged or grown unstable when the ground had collapsed.