Being an imperial envoy was a relaxed and high-paying job. All the eunuchs would compete with each other for it.
Regardless of whether the imperial edict was good or bad, they would be able to get a sum of money from the person the imperial edict was targeted at.
In their entire lives, these eunuchs wouldn't have many chances to leave the palace. Hence, once one became an imperial envoy, they might delay the journey by several days to check out the scenery of each place. In any case, they definitely wouldn't be rushing.
But this time around, the eunuch responsible for sending the imperial edict was anxious and impatient, rushing so much in his horse carriage to the extent that one of the horses died.
It was because he had to relay this information before others knew of it.
The princess had now become the king's favorite, and her status in the palace would surely rise greatly. If he didn't fawn on her now, wouldn't he be a failure as a eunuch?