Ryu didn't explain, he just looked at Elowen with the same gaze. But, there was indeed a catch, it was just that it wasn't nearly as bad as anything Elowen was thinking of.
While Ryu was riding on Lu'card's back to make it to this place, he realized something: there was actually great value in watching the evolution process of others.
The problem with this was that Lu'card was already near the pinnacle of the food chain. Even without Ryu's interference, there was truly a good chance that he could one day become the Dragon Emperor. It certainly wasn't a pipe dream by any stretch of the imagination, though it was somewhat unlikely.
There was a reason that the Fire Dragon Clan had ruled for so long and there were plenty of Dragons that were at least on par with Lu'card.
So while not impossible, it was still unlikely.
Due to this, watching the Embryonic Qi slowly work on Lu'card wasn't nearly the comprehension boost that Ryu thought it would be…