Satan Ye was a king for the first time, while Yila had already tried not once as a royal tutor... The teacher of a king and that of a commoner naturally differed.
Of course, for ordinary people, this "difference" comes from the status known as "King," but for Yila, the difference is in the number of people. After all, he only needs to be responsible for one student.
It's like the difference between a home tutor and a school teacher...
Therefore, when Yila instructed the King, his teaching methods were naturally tailored to the individual. And it's unavoidable to mention the distinctions he recognized in his two students, specifically the differences between Satan Ye and Isabella.
Isabella was a born King, possessing the magnanimity and temperament of royalty. Even the natural rebelliousness and mischief in children were overshadowed by these qualities. She had the detachment and calm befitting of a King, the characteristics of royal nature.