If Ling Tian, Hua Min'er, and the others survived the Lord of the Universe's self-destruction, that would be best. If they didn't, Chi Xue and the others still had to survive. Only by staying alive and then obtaining Guixu would they have a chance to revive Ling Tian and the others. Even if that chance was vanishingly slim, they still had to try. So, for Chi Xue and the others, figuring out how to stay alive was the most important thing.
Once they had considered all this, everyone began coming up with their own ways to survive, and soon they had a few options. For example, they could use the Time Secret Technique to buy time, then escape the Demon God Forbidden Ground with the Phantom Clone and Teleportation Secret Techniques. Or they could flee using the Teleportation Formation, among other possibilities.
Chi Xue immediately rejected the suggestion of fleeing by Teleportation Formation. He didn't think they would have enough time to reach it and activate it when the Lord of the Universe self-destructed. Both actions would take time. What was more, the formation they had set up earlier wasn't large-scale and couldn't take them very far from the Demon God Forbidden Ground. If they didn't get far enough, they could still be caught in the Lord of the Universe's self-destruction and perish.
As for setting up a large Teleportation Formation now, there simply wasn't enough time. The Lord of the Universe could self-destruct at any moment, and they had no time to set one up.
"That's right. The Lord of the Universe will self-destruct without warning. We may be able to sense it beforehand, but we won't have much time to prepare. By the time we reach the Teleportation Formation and activate it, the explosion will probably have already