But Li Pan himself was totally fine. Although the gain wasn't much, the loss wasn't significant either.
Probably because he cultivated the Nine Yin Manual, his body had already taken on a dragon's form, so it matched quite well with the Dragon's Power.
Therefore, he didn't experience the kind of situation Kotaro and the other Demon Sealing Ninjas did, where after releasing the Demon God Sealing, the body mutated, growing hair, beaks, and wings, becoming larger, harder, and stronger, with incredibly extreme energy consumption, requiring a reset to save their lives after one transformation.
In fact, after a little trial and error, Li Pan taught himself how to control this 'Dragon's Power' without a teacher.
Well, not exactly without a teacher, but basically like the super Saiyan transformations taught in the comics, you first "ya!" then "he!" and finally "ha!", and voilĂ , success...