After checking his current power for a while, Cairo decided to take a short rest until he recovered all of his power to fight Del. In truth, Cairo doesn't even need to fight Del anymore
The memories that Cairo inherited from the old man also contained the cultivation of space magic. If Cairo wants, he can also exit this tower
However, Cairo knew that he can't be too overconfident. In the Great Mage and Archmage Rank, the difference in power is much higher than the lower ranks
It comes to the point that planning things and combat experience would only have a significant effect if they are particularly great. It can't be helped, even a small realm increase in power will give the Great Mage a great increase
Think of it as a weak Great Mage only have attacks that can destroy a single mountain. As for his enemy, it has the power to destroy two mountains in a single attack