(1) Under the emperor, interpretation: where the emperor is. Use refers to Kyoto. In the thirty-third article of "Awakening the World": "Under the emperor, how can you tolerate such nonsense?" But how did you get his little wife, rob him of fifteen dollars and kill his husband? Where are you going today? Come from the facts. "
(2) Kings and princes: generally refers to the upper rulers in feudal times. The idiom comes from "Historical Records of Chen She Family": "And it's a long time since a strong man dies, and when he dies, he will make a name for himself. How dare princes and princes!"
If I can help you, I hope to adopt it. Thank you.