The emperor was taken aback for a few seconds before he composed himself. Usually he would've had the person who offended him executed but this was a heavenly doctor, and the emperor had his own agenda here.
If he were to execute a heavenly doctor, not only would the remaining heavenly doctors turn against him, he would also lose authority. Heavenly doctors were well loved public figures, and each of them were pioneers keeping their trade alive.
Heavenly doctor Tang was the only aromatherapist out there. If he were to be killed, all his knowledge would disappear and the skill would be set back a few hundred years.
That would be blasphemy in the medical community.
"Well then, what is it that you want?"
Heavenly doctor Tang sighed and ran his fingers through his curly hair, "Finally you allow me to speak your majesty."
The emperor made a 'go on' motion with his hand, now somewhat disinterested in whatever it was that heavenly doctor Tang was after.