Five hours later, Chen Fei flew out from an underground river.
There was nothing special inside this underground river. Chen Fei had appeared here purely to leave behind some clues for leaving this stretch of heaven and earth.
In the past five hours, Chen Fei had left over a hundred clues like this.
Given the vastness of this heaven and earth, these hundred-plus clues were not conspicuous, and they could also ensure that, within a certain period of time, they would be discovered by those in the Sky Opening Realm, or even the Creation Realm.
Once someone in the Creation Realm discovered the clues, after some study, they might try to leave this place.
What Chen Fei had to do now was wait patiently. After most of the cultivators left, he would follow behind and depart, so that among the many cultivators, he would not seem out of place.
On an oasis, Li Song and the others were surrounding and trying to kill a strange entity at the Mid-Stage Sky Opening Realm.
Li Song himself was at the Mid-Stage Sky Opening Realm, but within this stretch of heaven and earth, they could not resonate with the rules, causing cultivators' strength to be greatly weakened.
Added to the strange entity's exuberant vitality, even after fighting for a long time, Li Song and the others still had not taken it down.
As time went on, Li Song's side might even suffer casualties.
Li Song and the others wore grave expressions. It was not that they wanted to surround and kill this strange entity, but that this strange entity had already chased them for over a hundred thousand li.
Li Song and the others were worried that if they kept fleeing, they might draw over other strange entities. That would be truly dangerous,