Once the emperor was gone, Cillian walked out of court. He could feel all the ministers staring daggers at him. He can't care less what those old farts think of him. Since he's been minister, he acted respectfully because they are his elder, but he is done with that.
They all look down on him and think he is stupid, just because he is young. The fact that he is a ger certainly doesn't help, they all believe they should stay home taking care of children.
They also don't like how much access he has to the royal family. They're worried he is here as a spy, so they don't want him to become close to Ling Xinyu, the emperor's son.
Bowen and Luoyang spread rumors about him and of course, everyone believes them. Among them, there's one about how he is here to get revenge for his father. He doesn't care what people think, but he needs to know where the emperor stands.