Even though Leo was being followed by the enhanced energy beam released by the Ancient White Dragon Emperor, he was not worried too much about it because he knew that his teleportation was useless in his current situation.
In the Grade 2 Void Dragon World, all the dragons have spatial elements in their attacks. Hence, he could not escape those attacks using spatial skills like Teleportation.
However, the good thing about using teleportation was that it could give the user a few seconds of time which was enough for Leo to come up with his strategy.
'I think it is time to repeat that strategy.'
Nevertheless, Leo was not going to use a new strategy as his brain was not quick enough to think of a new strategy while he was being chased by a powerful energy beam that would turn him into nothing if he gets caught.
Hence, he decided to use an old strategy that Leo was confident in blocking the attack.