Being free to do as he wants , Oolong focused all his time on reading the countless books on magic in the library ...
He also practised his Telekinesis diligently , as it is the base and if it gets stronger then all his magic abilities become stronger ...
Thankfully , because he trained his mind since early on , he had wonderful memory and could memories thousands of books easily ....
when he finished reading all books in the library , he finally understood what the teacher meant ...
Magic isn't limited , and can't be fully described in books ...
Books only mention unique methods and ways of using some specific magic ,or a special method to understand a certain property or Element....
but in the end ,every mage needs to rely on himself to sense & comprehend the various elements & properties ...
(imagine it as Narutoverse's chakra nature manipulation)
And comprehension doesn't actually have an upper limit ...
This means that the magic he learned , can be trained to infinite levels , and he even has a chance to attain godhood & omnipotence just by practicing diligently .... over a few million years or so ...
That's why he thought that he still needs to get the dragon balls and make a few dozen wishes to speed up the progress ...
While in the Magic school & between reading books ,he comprehended the start of each property & element ... and he discussed with various teachers about their comprehension so that he has reference material in the future ....
And who knows ,maybe he can incorporate their understanding into his own, making his stronger ...
Taking a year and 3 months at the magic school ,he now has less than three months before the start of CANON ...
He quickly bade farewell to the magic school and went to his next destination , Mt.Paozu ...