Muck
The sense of urgency had diminished once the Divine Doctor had healed the Emperor of Harmony. No longer was there an extraordinarily pressing event that took precedence over all others.
Of course, just because the Divine Doctor made it look easy didn't mean that it wasn't an extraordinarily significant event.
It undoubtedly was.
After all, healing the Eternal Dream Disease was why his father sought out the Divine Doctor in the first place. Finding the Divine Doctor was why his father had ever, in turn, sought the Silas Clan, which in turn had led to Rui's birth.
Then Rui had gone full circle by succeeding where his father had failed by not only finding the Divine Doctor to heal him but also tying him to the Kandrian Empire. A feat that no nation-state of any caliber had ever succeeded in completing.