"Teacher is there no other way."
Celestia looked at the tired and pain-filled face of Ryuu as she spoke, "Yes there are various alternative means but all of them are not as great as this one, not only some of them are extremely slow but the result is equally unimpressive and inefficient, so grit your teeth and complete another cycle of that technique for me."
Ryuu looked alarmed at that as immediately spoke with a horrified look on his face, "But…."
Celestia gave a stern gaze to him as she spoke, "No buts dear you have still a hundred cycles to complete and I will make you complete it by today, and if you are feeling shy doing it on your own then please tell me I will lend my hand."
That made Ryuu quickly start working on the technique with renews vigour, it hurt him when he practised the technique badly but getting her involved would make him hurt even more as such he chose the alternative.