An image that reversed time.
In fact, this was not a secret that only they had. It was something that all Daoists could do.
As for the fact that this was a powerful spell that involved the legendary 'time' law?
This was not a matter of time.
Reverse time images were very common spells.
The fundamental principle was:
when we observe a distant planet countless light years away, what we see is not the current picture of the planet, but a historical picture of it countless years ago.
As long as they jumped far enough, they would be able to capture the video.
It wasn't a real jump.
It was some kind of special 'spatial fixed-point summoning array'. Through very exquisite calculation and positioning, it transmitted a long distance light image in reverse and summoned it.
"Have you located it?" The dark-blue creature laughed.